Question

4) Explain why 7 × 11 ×13 + 13 and 7 × 6 × 5 × 4 × 3 × 2 × 1 + 5 are composite number?

Answer 1

hope this help u
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Answer 2

firstly composite no are the no which are divisible by any other no.
77multiply 13+13
1001+13
1014
it Is composite no because 1014 can be divisible by 2 and any other no also

42multiply 20multiply 6+5
42multiply120+5
5040+5
5045
it is composite no bcz it is divisible by 5 and any other no