Question

explain why 7*6*5*4*3*2*1+5is a composite no

Answer 1

$5(7 \times 6 \times 4 \times 2 \times 1 + 1) \\ 5 \times 337$
it have two factors so it is a composite no.

Answer 2

7×6×5×4×3×2×1+5
=5040+5
=5045

It is composite number cause it has two factors