Baseline Test 7 Statistics - Tables

How difficult are the questions?

  • The number in each cell is the percentage of the group that got this question wrong.
  • A high number indicates a difficult question, a low number an easy question.
  • Question Year 6 Year 7 Year 8 Year 9 Year 10
    Boys Girls All Boys Girls All Boys Girls All Boys Girls All Boys Girls All
    1 0 33 36 35 32 35 34 29 33 31 21 24 23
    2 0 0 0 27 17 22 22 21 22 23 22 23 19 17 18
    3 50 0 25 18 25 22 17 14 16 17 13 15 14 10 12
    4 50 0 25 32 25 29 20 21 21 25 21 23 19 16 18
    5 100 100 100 86 100 93 84 81 83 83 81 82 84 83 84
    6 50 0 25 32 50 41 43 48 46 43 44 44 28 25 27
    7 50 0 25 9 25 17 31 31 31 33 29 31 22 19 21
    8 50 0 25 55 67 61 67 65 66 64 61 63 54 52 53
    9 50 100 75 68 67 68 65 67 66 67 67 67 65 64 65
    10 50 100 75 45 50 48 50 53 52 50 48 49 50 42 46
    11 100 100 100 73 83 78 68 71 70 67 68 68 62 66 64
    12 100 100 100 86 92 89 84 83 84 84 85 85 82 84 83
    13 50 100 75 68 83 76 73 73 73 71 69 70 61 59 60
    14 50 100 75 82 75 79 75 79 77 77 79 78 74 79 77
    15 100 100 100 45 67 56 49 46 48 51 45 48 54 49 52
    16 100 0 50 27 33 30 37 39 38 42 39 41 33 30 32
    17 100 0 50 86 83 85 83 83 83 82 79 81 74 74 74
    18 50 0 25 9 17 13 27 29 28 30 29 30 27 25 26
    19 100 100 100 68 67 68 65 65 65 66 64 65 64 61 63
    20 100 100 100 73 83 78 79 83 81 78 82 80 74 80 77
    21 100 100 100 86 100 93 91 93 92 93 94 94 91 94 93
    22 100 100 100 68 75 72 73 70 72 73 70 72 69 63 66
    23 50 0 25 36 67 52 51 51 51 50 48 49 36 37 37
    24 50 0 25 23 17 20 32 30 31 36 26 31 26 21 24
    25 50 100 75 50 75 63 66 66 66 67 63 65 58 53 56
    26 50 0 25 23 25 24 30 33 32 33 32 33 28 25 27
    27 50 100 75 77 75 76 69 70 70 67 67 67 66 67 67
    28 100 0 50 18 50 34 40 35 38 42 33 38 35 27 31
    29 100 0 50 68 83 76 71 77 74 70 73 72 63 67 65
    30 50 0 25 27 42 35 21 17 19 23 17 20 19 14 17
    31 50 0 25 45 42 44 47 43 45 50 44 47 43 38 41
    32 50 0 25 23 17 20 22 18 20 24 19 22 23 18 21
    33 100 0 50 68 75 72 77 78 78 77 78 78 68 73 71
    34 50 0 25 55 67 61 48 67 58 40 50 45 25 35 30
    35 100 0 50 41 33 37 48 44 46 52 44 48 45 36 41
    36 100 0 50 59 67 63 55 60 58 59 61 60 53 52 53
    37 100 100 100 91 83 87 80 80 80 81 81 81 82 82 82
    38 100 0 50 86 75 81 82 81 82 77 76 77 70 71 71
    39 100 0 50 91 92 92 94 96 95 93 94 94 91 91 91
    40 50 0 25 64 58 61 67 68 68 68 65 67 54 50 52
    41 100 0 50 59 50 55 56 53 55 54 49 52 48 39 44
    42 50 100 75 77 83 80 66 66 66 70 69 70 70 71 71
    43 50 100 75 55 50 53 59 64 62 59 60 60 54 52 53
    44 100 100 100 86 83 85 81 81 81 82 80 81 79 78 79
    45 100 100 100 82 75 79 76 74 75 78 77 78 82 85 84
    46 100 100 100 91 100 96 88 85 87 89 86 88 88 85 87
    47 100 100 100 95 92 94 80 85 83 78 80 79 71 70 71
    48 50 0 25 27 67 47 50 52 51 49 45 47 40 37 39
    49 100 0 50 55 83 69 71 71 71 71 68 70 65 61 63
    50 100 0 50 68 67 68 59 58 59 62 56 59 55 49 52

    Popular wrong answers.

  • This table identifies the wrong answer with the most selections for each question for each group.
  • Question Year 6 Year 7 Year 8 Year 9 Year 10
    Boys Girls All Boys Girls All Boys Girls All Boys Girls All Boys Girls All
    1

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    a) circle

    2

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    a) square and cube

    3

    c) making an appointment with an unknown person you met on the internet

    a) sharing your login and password with a friend

    c) making an appointment with an unknown person you met on the internet

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    a) sharing your login and password with a friend

    4

    b) logging in on your school computer account

    b) logging in on your school computer account

    b) logging in on your school computer account

    d) a pop-up message asking you to update Adobe Reader software

    b) logging in on your school computer account

    d) a pop-up message asking you to update Adobe Reader software

    d) a pop-up message asking you to update Adobe Reader software

    d) a pop-up message asking you to update Adobe Reader software

    d) a pop-up message asking you to update Adobe Reader software

    d) a pop-up message asking you to update Adobe Reader software

    d) a pop-up message asking you to update Adobe Reader software

    d) a pop-up message asking you to update Adobe Reader software

    d) a pop-up message asking you to update Adobe Reader software

    d) a pop-up message asking you to update Adobe Reader software

    d) a pop-up message asking you to update Adobe Reader software

    5

    c) fortran and java

    d) basic and cobol

    d) basic and cobol

    c) fortran and java

    c) fortran and java

    c) fortran and java

    c) fortran and java

    d) basic and cobol

    c) fortran and java

    c) fortran and java

    c) fortran and java

    c) fortran and java

    c) fortran and java

    c) fortran and java

    c) fortran and java

    6

    a) chess

    a) chess

    a) chess

    b) test

    a) chess

    b) test

    c) matriculation

    c) matriculation

    c) matriculation

    b) test

    c) matriculation

    c) matriculation

    c) matriculation

    c) matriculation

    c) matriculation

    7

    a) easy to learn

    a) easy to learn

    a) easy to learn

    c) something that only works on modern computers

    a) easy to learn

    c) something that only works on modern computers

    a) easy to learn

    c) something that only works on modern computers

    a) easy to learn

    a) easy to learn

    a) easy to learn

    a) easy to learn

    c) something that only works on modern computers

    c) something that only works on modern computers

    c) something that only works on modern computers

    8

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    a) a PDF file in your mail

    9

    a) print the even numbers

    d) print the even numbers between 170 and 220

    d) print the even numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    b) print all the numbers between 170 and 220

    10

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    d) a computer can turn itself off

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    b) a computer can write its own sub program

    11

    b) an alphanumeric

    b) an alphanumeric

    b) an alphanumeric

    d) a logarithm

    a) a syllogism

    d) a logarithm

    b) an alphanumeric

    b) an alphanumeric

    b) an alphanumeric

    b) an alphanumeric

    b) an alphanumeric

    b) an alphanumeric

    b) an alphanumeric

    b) an alphanumeric

    b) an alphanumeric

    12

    c) 43

    c) 43

    c) 43

    c) 43

    b) 50

    c) 43

    b) 50

    b) 50

    b) 50

    b) 50

    b) 50

    b) 50

    c) 43

    c) 43

    c) 43

    13

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    b) .jpg

    14

    b) cut the file into pieces

    d) make the files smaller

    d) make the files smaller

    b) cut the file into pieces

    c) using Wetransfer/Dropbox

    b) cut the file into pieces

    b) cut the file into pieces

    b) cut the file into pieces

    b) cut the file into pieces

    b) cut the file into pieces

    b) cut the file into pieces

    b) cut the file into pieces

    b) cut the file into pieces

    b) cut the file into pieces

    b) cut the file into pieces

    15

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    c) search engines

    16

    d) to make it easier to switch to pause

    a) to make you tea to go with the cookies

    d) to make it easier to switch to pause

    b) to see how old your computer is to make an offer for a new one

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    d) to make it easier to switch to pause

    17

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    a) it is easier to detect errors in all 1’s and 0’s

    18

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    a) one

    19

    d) TIFF file

    a) RAW file

    a) RAW file

    a) RAW file

    d) TIFF file

    d) TIFF file

    a) RAW file

    a) RAW file

    a) RAW file

    a) RAW file

    a) RAW file

    a) RAW file

    a) RAW file

    d) TIFF file

    d) TIFF file

    20

    c) radar

    c) radar

    c) radar

    c) radar

    b) joker

    c) radar

    c) radar

    c) radar

    c) radar

    c) radar

    c) radar

    c) radar

    c) radar

    c) radar

    c) radar

    21

    a) copyright

    a) copyright

    a) copyright

    c) trademark

    a) copyright

    c) trademark

    a) copyright

    a) copyright

    a) copyright

    a) copyright

    a) copyright

    a) copyright

    a) copyright

    a) copyright

    a) copyright

    22

    a) with a digital camera, the photos are taken by a built in robot

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    d) a digital camera has no shutter, aperture and lens

    23

    a) to switch your computer on and off

    a) to switch your computer on and off

    a) to switch your computer on and off

    c) to email and re-open it

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    d) to use the keys CTL+ALT+DEL

    24

    b) your laptop

    b) your laptop

    b) your laptop

    d) your e-mail address

    b) your laptop

    d) your e-mail address

    d) your e-mail address

    d) your e-mail address

    d) your e-mail address

    d) your e-mail address

    d) your e-mail address

    d) your e-mail address

    d) your e-mail address

    d) your e-mail address

    d) your e-mail address

    25

    a) to convert an analogue signal into a digital signal

    b) to see how much MB’s you've used

    b) to see how much MB’s you've used

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    a) to convert an analogue signal into a digital signal

    26

    a) the data is random and has no visible pattern

    a) the data is random and has no visible pattern

    a) the data is random and has no visible pattern

    b) each time the number is a doubling of the previous one

    a) the data is random and has no visible pattern

    b) each time the number is a doubling of the previous one

    b) each time the number is a doubling of the previous one

    b) each time the number is a doubling of the previous one

    b) each time the number is a doubling of the previous one

    b) each time the number is a doubling of the previous one

    b) each time the number is a doubling of the previous one

    b) each time the number is a doubling of the previous one

    b) each time the number is a doubling of the previous one

    b) each time the number is a doubling of the previous one

    b) each time the number is a doubling of the previous one

    27

    a) an internationalism

    d) an interoperability

    d) an interoperability

    d) an interoperability

    a) an internationalism

    d) an interoperability

    b) something which can be purchased to work with it

    b) something which can be purchased to work with it

    b) something which can be purchased to work with it

    b) something which can be purchased to work with it

    b) something which can be purchased to work with it

    b) something which can be purchased to work with it

    b) something which can be purchased to work with it

    b) something which can be purchased to work with it

    b) something which can be purchased to work with it

    28

    c. to scroll page by page

    a) to go to every 10th page to see if you've found it

    c. to scroll page by page

    d) to search at random in the pages until you found it

    c. to scroll page by page

    c. to scroll page by page

    c. to scroll page by page

    c. to scroll page by page

    c. to scroll page by page

    c. to scroll page by page

    c. to scroll page by page

    c. to scroll page by page

    c. to scroll page by page

    c. to scroll page by page

    c. to scroll page by page

    29

    b) Google

    b) Google

    b) Google

    c) Legacy

    b) Google

    c) Legacy

    b) Google

    b) Google

    b) Google

    b) Google

    b) Google

    b) Google

    c) Legacy

    b) Google

    b) Google

    30

    b) because it is easier to ofer files for sale

    b) because it is easier to ofer files for sale

    b) because it is easier to ofer files for sale

    b) because it is easier to offer files for sale

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    d) with a backup, you can leave your computer switched on

    31

    b) you can pay more automated when ordering

    b) you can pay more automated when ordering

    b) you can pay more automated when ordering

    b) you can pay more automated when ordering

    b) you can pay more automated when ordering

    b) you can pay more automated when ordering

    d) the next person who will log in can use data

    d) the next person who will log in can use data

    d) the next person who will log in can use data

    d) the next person who will log in can use data

    d) the next person who will log in can use data

    d) the next person who will log in can use data

    d) the next person who will log in can use data

    d) the next person who will log in can use data

    d) the next person who will log in can use data

    32

    a) when there is bacteria in it

    a) when there is bacteria in it

    a) when there is bacteria in it

    b) when it contains a trojan horse

    a) when there is bacteria in it

    b) when it contains a trojan horse

    b) when it contains a trojan horse

    b) when it contains a trojan horse

    b) when it contains a trojan horse

    b) when it contains a trojan horse

    b) when it contains a trojan horse

    b) when it contains a trojan horse

    b) when it contains a trojan horse

    b) when it contains a trojan horse

    b) when it contains a trojan horse

    33

    b) accuracy

    a) precision

    b) accuracy

    c) security

    b) accuracy

    c) security

    c) security

    c) security

    c) security

    c) security

    c) security

    c) security

    c) security

    c) security

    c) security

    34

    a) a video card

    a) a video card

    a) a video card

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    d) a hard disk drive

    35

    c) components are used with a layer of plastic

    a) they are put together with second hand components

    c) components are used with a layer of plastic

    a) they are put together with second hand components

    d) they use little power

    a) they are put together with second hand components

    d) they use little power

    d) they use little power

    d) they use little power

    c) components are used with a layer of plastic

    d) they use little power

    d) they use little power

    d) they use little power

    d) they use little power

    d) they use little power

    36

    b) Bluetooth will be used by the wired system

    b) Bluetooth will be used by the wired system

    b) Bluetooth will be used by the wired system

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    c) the Wi-Fi system will use Ethernet

    37

    c) is a value in the decimal system

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    a) takes a value

    38

    2) 10100

    1) 10001

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    2) 10100

    39

    d) 011

    b) 002

    d) 011

    b) 002

    b) 002

    b) 002

    b) 002

    b) 002

    b) 002

    b) 002

    b) 002

    b) 002

    c) 010

    c) 010

    c) 010

    40

    2) 200.5

    2) 200.5

    2) 200.5

    3) 101⁄2

    2) 200.5

    3) 101⁄2

    3) 101⁄2

    3) 101⁄2

    3) 101⁄2

    3) 101⁄2

    3) 101⁄2

    3) 101⁄2

    3) 101⁄2

    2) 200.5

    2) 200.5

    41

    a) question

    a) question

    a) question

    d) the process

    d) the process

    d) the process

    d) the process

    d) the process

    d) the process

    d) the process

    d) the process

    d) the process

    d) the process

    d) the process

    d) the process

    42

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    b) an action

    43

    a) an announcement

    a) an announcement

    a) an announcement

    d) a reference

    d) a reference

    d) a reference

    d) a reference

    d) a reference

    d) a reference

    d) a reference

    d) a reference

    d) a reference

    a) an announcement

    d) a reference

    d) a reference

    44

    b) a data stream

    c) a page reference

    c) a page reference

    b) a data stream

    b) a data stream

    b) a data stream

    b) a data stream

    b) a data stream

    b) a data stream

    b) a data stream

    b) a data stream

    b) a data stream

    b) a data stream

    b) a data stream

    b) a data stream

    45

    b) a command

    a) a question

    a) a question

    b) a command

    b) a command

    b) a command

    b) a command

    b) a command

    b) a command

    b) a command

    b) a command

    b) a command

    b) a command

    b) a command

    b) a command

    46

    d) a sub routine

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    c) a loop

    47

    b) 11011100

    c) 00011100

    c) 00011100

    b) 11011100

    d) 11101111

    b) 11011100

    b) 11011100

    b) 11011100

    b) 11011100

    b) 11011100

    b) 11011100

    b) 11011100

    b) 11011100

    b) 11011100

    b) 11011100

    48

    a) think of it when you turn on your computer

    a) think of it when you turn on your computer

    a) think of it when you turn on your computer

    c) add it in airdrop

    a) think of it when you turn on your computer

    a) think of it when you turn on your computer

    c) add it in airdrop

    d) put the link on LinkedIn

    c) add it in airdrop

    c) add it in airdrop

    c) add it in airdrop

    c) add it in airdrop

    c) add it in airdrop

    c) add it in airdrop

    c) add it in airdrop

    49

    d) CTRL+ALT+DEL

    b) shift

    d) CTRL+ALT+DEL

    c) shift and a letter

    d) CTRL+ALT+DEL

    d) CTRL+ALT+DEL

    d) CTRL+ALT+DEL

    d) CTRL+ALT+DEL

    d) CTRL+ALT+DEL

    d) CTRL+ALT+DEL

    d) CTRL+ALT+DEL

    d) CTRL+ALT+DEL

    c) shift and a letter

    c) shift and a letter

    c) shift and a letter

    50

    a) accurately calculate the age of a pet

    a) accurately calculate the age of a pet

    a) accurately calculate the age of a pet

    d) to calculate a plurality

    c) to count back to zero

    d) to calculate a plurality

    c) to count back to zero

    d) to calculate a plurality

    d) to calculate a plurality

    c) to count back to zero

    d) to calculate a plurality

    d) to calculate a plurality

    c) to count back to zero

    d) to calculate a plurality

    c) to count back to zero