Question

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

Answer 1

Answer:

1. 7 × 11 × 13 + 13

13(7 × 11 + 1)

13(77 + 1)

13(78)

so 13 and 78 are the factors of given number besides 1

and that number itself. so composite number.

2. 7 × 6 × 5 × 4 × 3 × 2 × 1 + 5

5(7 × 6 × 4 × 3 × 2 × 1 + 1)

5(1008 + 1)

5(1009)

so 5 and 1009 are factors besides 1 and number itself so it is a composite number

MARK AS BRAINLIEST