Question

Explain why 7x11x13+13 and 7x6x5x4x3x2x1 are composite numbers.

Answer 1

Answer:

look

Step-by-step explanation:

in first part just take 13 common u will get two numbers getting multiplied which is nothing nut a composite no. (product of two different numbers)

in second there is 4 and 6 which are multiples of 2 hence they are also composite no.s

Answer 2

Since, 7x11x13+13

=13(7×11×1+1) and 7x6x5x4x3x2x1+5

=5(7×6×1×4×2×1+1)

so they are composite numbers.