Question

A number is selected from numbers 1 to 25 . The probabilty that it os a prime is

Answer 1

n(s)=25
prime numbrs are n(a)=(2,3,5,7,11,13,17,19,23)=9
probablity p(a)=n(a)/n(s)
=9/25

Answer 2

the probability that it is prime is 9by25