Question

explain why 7×6×5×4×3×2×1+5 and 7×11×13+13 are composite nunber​

Answer 1

Answer:

So other than 1 and the number itself, 13 and 78 are also the factors of the number. ... So this number is definitely not prime. Hence its composite number. Similarly, 7×6×5×4×3×2×1+5 can be written as , i.e. 5 * (1009).