Question

I am a prime number.I am a factor of $56$.I am not a multiple of $7$.What number am I?

Answer 1

The prime factors of 56 are $2^3\times 7$. Since it is not the multiple of 7, so the number is 2. As, 2 is the prime number and the factor of 56 also not multiple of 7, therefore, the number is 2.