Question

Number of prime numbers from 1 to 50 are (1) 18 (2) 12 (3) 15 (4) 20​

Answer 1

Answer: (3) 15

Prime numbers are the numbers with two factors, 1 and the number itself. Prime numbers between 1 to 50 are listed below,

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47

i.e there are 15 prime numbers between 1 to 50.

Answer 2

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47

i.e there are 15 prime numbers between 1 to 50