Question

7x6x5x4x3x2x1+5 a composite number

Answer 1

After solving 7×6×5×4×3×2×1+5 we get 5045 .It is has more than 2 factors ( 1, itself, 5 etc.) so we can say it is a composite number

Answer 2

7×6×5×4×3×2×1+5
= 5040 +5
= 5045
Now 5045 can be expressed as a product of prime no.s 5 and 1009.
And the fundamental theorem of arithmetic gurantees that this factorization is unique.
Thus , the given no. is composite.