Question

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

Answer 1

Answer:

Composite numbers are numbers that have more than 2 factors and here

7 x 11 x 13 + 13

Can be written  as

⇒ (77 + 1) x 13

⇒ 1014

So the factors are

⇒ 13 x 13 x 3 x 2

 Therefore It is a composite number. Because given number has more than two factors.

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Answer 2

Answer:

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