Question

2. What is the probability that a number selected from 1, 2, 3, ... 24,25 is:
(a) A number divisible by 3 and 4
(b) A number divisible by 2 and 5
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Answer 1

Answer:

a 14/25

b 16/25

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.........

Answer 2

Answer:

let A be the event that the number is divisible be 3 and 4

A={12,24}

p(A)=n(A)÷n(S)

=2/25

let B be an event that the number is divisible by 2 and 5

B={10,20}

n(B)=2

p(B)=n(B)÷n(S)

=2/25

hope it helps you

I solved myself with very struggle

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