Question

Explain why 3× 5 × 7+7 is a composite number. ANS)7×

Answer 1

Answer:

252

Step-by-step explanation:

As 252 is divisible by many numbers like 2,3,4,6,7etc

Answer 2

Step-by-step explanation:=3*5*7+7

=7(3*5+1)

=7*16

7 and 16 are the factors of given number except 1 and number itself we have 7 and 16 as factors for given number

Therefore 3*5*7+7 is a composite number