How many prime numbers are less than 50 ?

Question:
How many prime numbers are less than 50 ?

[A].

16

[B].

15

[C].

14

[D].

18

Answer: Option B

Explanation:

Prime numbers less than 50 are:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47

Their number is 15