A prime number less than 60 is randomly picked, what is probability that one of its digit will be 3?

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09 May 2018 Probability

A prime number less than 60 is randomly picked, what is probability that one of its digit will be 3?

OPtion

1) 1/2
2) 6/15
3) 7/17
4) 5/17
5) 1/8
6) 9/16
7) 7/16
8) 2/7
9) 8/17
10) None of these

Solution

Total number of prime numbers less than 60 = 17 => 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59
Number of positive outcomes i.e. number where at least one of its digit is 3 = 7

Probability = 7/17

Correct Option: 3 Best Solution (0)