Question

An integer is chosen between 70 and 100
chosen between 70 and 100. Find the probability that it is
(a) a prime number
(b) divisible by ​

Answer 1

a) prime nos. between 70 to 100 are:

71, 73, 79, 83, 89, 97.

b) prime nos meaning: number greater than 2 having only two factor is called prime numbers.

only number 1 & number itself can be divisible to them......there is not other number that can be divisible to those numbers