Question

Explain why 5x3x7+3 is a composite number.

Answer 1

Answer:

using distributive property we get 3 as common

therefore 3(5*7+1)

3*36 =108

prime factorisation of 108= 2*2*3*3*3

5*3*7+3 have more than 2 factors i.e2*2*3*3*3

therefore it is a composite no.

..... hope you will understand this!