Question

Probability of getting a number in which the product of two digit number is a prime number

Answer 1

Answer:

$76.66......$

Step-by-step explanation:

There are 90 two digit numbers (10…99).

There are 21 two digit primes greater than 9 and less than 100: “11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, and 97”.

The chances of choosing one of the other 69 numbers (90 - 21) would therefore be 69/90 = 76.66…%.