Question

Explain why 7 ×11 ×13 + 13 and 7 ×6 ×5 ×4 ×3 ×2× 1 + 5 are composite numbers.​

Answer 1

Composite numbers are the numbers which has more than two factors.

7 ×11 ×13 + 13 = 1014

7 ×6 ×5 ×4 ×3 ×2× 1 + 5 = 2525

>> Factors of 1014: 1, 2, 3, 6, 13, 26, 39, 78, 169, 338, 507, 1014.

As it has more than two factors, it is called a composite number.

>> Factors of 2525 : 1, 5, 25, 101, 505, 2525.

As it has more than two factors, it is called a composite number.

Hope This Helps You...

Please Mark Me As Brainliest.

And Please Follow Me.

Answer 2

Step-by-step explanation:

7×11+13+13

=13×(7×11+1)

=13×(77+1)

=13×78

=13×13×3×2

Since it has more two factors (13,3,2,1,13+77 i.e. 1014),it is a composite number