Q155
Which one of the following is a prime number ?
A.
161
B.
221
C.
373
AnswerD.
437
E.
None of these
Answer: Option C
Solution
Answer: Option C
Solution:
437 > 22All prime numbers less than 22 are : 2, 3, 5, 7, 11, 13, 17, 19
161 is divisible by 7, and 221 is divisible by 13
373 is not divisible by any of the above prime numbers.
Therefore 373 is prime