Question

cards numbered from 7 to 40 were put into a box. find the probability that the card drawn out will be a multiple of 7

Answer 1

STEP BY STEP EXPLANATION.....

Favourable outcomes - 7, 14, 21, 28, 35. = 5
Total no. Of outcomes - 40-6 = 34

P(multiple of 7) = 5 / 34

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Answer 2

S= { 7, 8, 9,.....40} n(S) = 34

Event A :- card drawn will be multiple of 7

A = { 7,14, 21, 28, 35}

.•. n (A) =5

Hence, p(A) = n(A) = 5

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n (S) 34

Therefore, probabloty of getting card multiple of 7 is 5 / 34