Question

An integer is chosen at random between 1 and 100. Find the probability that it is

1)divisible by 8

2) not divisible by 8

Answer 1

Total outcomes = 100

Total numbers divisible by 8 =12

So

Probability of no. To be divisible by 8

= 12/100 =3/25....

Now numbers not divisible by 8 = 100-12 = 88

Probability of no. Not divisible by 8 =88/100 =22/25

Good luck