Question

Out of number 1 to 120 one is selected at random what is the probability that is divisible by 8

Answer 1

Hey

The answer is 15/120 that is 1/8 because there are exactly 15 numbers divisible by 8 between1-120.You may check it by Ap formula

a=8,d=8,an=120 and the formula is

an=a+(n-1)d

Hope it helps you and you understood it...

Answer 2

shortcut for this type question..

120/8

ans is 15..

so P(A)= 15/120

= 1/8

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