Math, asked by kulpreet4580, 10 months ago

EXPLAIN WHY 3X5X7+7 IS A COMPOSITE NUMBER

Answers

Answered by arupsaharoy

15

Answer:

3*5*7+7

=7*(3*5+1)

=7*(15+1)

=7*16

=112 which is divisible by 2 so given number is composite number..

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