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Numbers - General Aptitude

Q1:

Which one of the following is a prime number ?

A 119

B 187

C 247

D 551

E None of these

ANS:E - None of these

551 > 22 All prime numbers less than 24 are : 2, 3, 5, 7, 11, 13, 17, 19, 23. 119 is divisible by 7; 187 is divisible by 11; 247 is divisible by 13 and 551 is divisible by 19. So, none of the given numbers is prime.