Question

The probability of getting a prime number less than 20 and only two digit number is

Answer 1

My answer to this question is 4/20 = 1/5

Answer 2

The prime numbers below 20 are
2,3,5,7,11, 13,17,19
Favorable numbers =8
Total 2 digited numbers are 10,11,12,....99
Probability =m/n=8/90=4/45