Question

Explain why 7* 6 x 5 x 4*3*2*1+5 is a composite numbers​

Answer 1

7×6×5×4×3×2×1+5 can be written as 5*[7*6*5*4*3*2*+1] or 5*(1009). So, other than the number and 1, it has 5 and 1009 as its factors too. So it is a composite number.

Explanation:

A composite number is a positive integer that has a factor other than 1 and itself.