Question

1.
Explain why 7 x 11 x 13 + 13 is a composite number.

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Answer 1

QUESTION⤵️

Explain why 7 x 11 x 13 + 13 is a composite number.

$\fbox\pink{A}\fbox\green{N}\fbox\pink{S}\fbox\green{W}\fbox\pink{E}\fbox\green{R}$

$7 \times 11 \times 13 + 13$

$13(7 \times 11 + 1)$

$13(77 + 1)$

$13 \times 78$

$\purple{13 \times 13 \times 3 \times 2}$

(SINCE IT HAS MORE THAN TWO FACTORS [13,3,2,1,13×78= 1014] )

THEREFORE, IT'S A COMPOSITE NUMBER