2 x 7 x 7 = 98
There is no divisibility rule for 13 because it is a prime number. If you are thinking: why is there a divsibility rule for 2 and 3 then. Well, i don't know so go look it up on google.
13 is a prime number - it can only be divided by 1 and itself (for an integer answer).
117 is a composite. I know because suming the digits is 9. A number is a multiple of 117 if it's a multiple of 9 and 13 at the same time
A number is divisible by 15 if it is divisible by the prime factors of 15, that is, 5 and 3.
It is only divisible by itself and one so therefore 31 is a prime number
It is only divisible by itself and one so therefore 41 is a prime number
By tautology. If it did not work, it would not be a divisibility rule!
6 ^ 3 2 answer:3x2
What is the divisblity rule by 8
1, 2, 3 and 4
1, 2, 4 and 47
There is no easy rule for divisibility by 34.