" Explain why "3times5times7+7" is a composite number."

Explain why 3 xx 5 xx 7 +7 is a composite number.

Explain why 3 xx 5 xx 7 +7 is a composite number.

Explain why 3 xx 5xx 7 xx + 7 is a composite number

Explain why: 1xx2xx3xx5xx7+3xx7 is a composite number.

Explain why 5 x 7 x 13 + 13 is a composite number

Explain why: 7xx11xx13xx15+15 is a composite number.

Explain why 3xx5xx7+7 is a composite number.

Explain why (7 times 11 times 13)+13 " and " (7 times 6 times 5 times 4 times 3 times 2 times 1)+5 are composite numbers.

Why is 3 x 5 x 7 + 7a composite number?

Explain Why 7times11times13times+13 and 7times6times5times4times3times2times1times+5 are composite number.