Question

Integer is chosen at random between 1 and hundred find the probability that is first divisible by 8 second not divisible by 8

Answer 1

Total Outcomes =100.

1.Divisible by 8 are 8,16,24,32,40,48,56,64,72,80,88,96.
Favourable outcomes =12.
Probability of number divisible by 8
=F.O/T.O
=8/12
=4/6
=2/3.

2. Not divisible by 8 are 100-12 =88.
Probability of number not divisible by 8 are = F. O/T. O.
=88/100.
=44/50
=22/25.