Question

Explain why the number 7 into 11 into 13 + 13 is composite

Answer 1

Answer:

Step-by-step explanation:

= 7x11x13 + 13

= 13  (77 + 1)

= 13 x 78

= 13 x 13 x 3 x 2

Since the number has more than 2 factors, the given number is a composite number

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Answer 2

We have,7×11×13+13=1001+13=1014.

Now,1014=2×3×13×13.

Thus,it is the product of prime factors.

Hence,7×11×13+13 is a composite number.