Question

Explain why 7×11×13+13 and 8×5×4×3×2+5 are composite numbers (Maths Class X)​

Answer 1

Answer:

7×11×13+13=13(7×11+1)

=13(77+1)

=13×78

=1014

prime factor of 1014=2×3×13×13 by the arithmetic fundamental theorem a composite number can be expressed in the product of prime number so given number is a composite number