Question

Explain why 7 11 13 - 13 and
7 * 6 * 5 * 4 * 3 * 2 * 1 - 5 are composite pombers ?​

Answer 1

Step-by-step explanation:

We can write 7×11×13+13 =1014

=13(7×11+1)=13(77+1)

=13×78=13×2×39

So other than 1 and the number itself, 13 ,2 and 39 are also the factors of the number.

Hence its composite number.

Similarly

Now 7×6×5×4×3×2×1+5 =5045

=5(7×6×4×3×2×1+1)

=5(1008+1)

=5×1009

So, other than the number and 1, it has 5 and 1009 as it's factors too. So it is also a composite number.

Hope it will help u.

Plz.. mark it as brainliest answer.

Answer 2

Refer to the attachment