Which number is a prime number?
a. 111
b. 121
c. 131
d. 141

I know for a fact that 121=11 times 11

hmm
to tell if a number is divisible by 3, add the digits and see if the sum is divisible by 3
well 111 is divisible by 3
141 is also divisible by 3

answer is C

Look i don’t know the answer to this but someone else will so just wait a little bit longer