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A two way table shows information about pupils in a primary school

42 boys can count

58 girls can count

11 boys cannot count

9 girls cannot count

there are 53 boys

there are 67 girls

100 pupils can count

20 pupils cannot count

there are 120 pupils altogether

how many boys can count?

what is the probability that any pupil is a boy and can count?

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  1. 21 June, 18:10
    0
    42 boys can count (given)

    P (boy & can count) = 0.35

    Step-by-step explanation:

    P (boy who can count) = 42/120

    7/20 = 0.35
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