Question

Check whether 5×7×11+7 is composite no. Why

Answer 1

Answer:

392

Step-by-step explanation:

5×7=35×11=385+7=392

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Why is 392 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 392 can be evenly divided by 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196 and 392, with no remainder.

Since 392 cannot be divided by just 1 and 392, it is a composite number.

More Examples

Number 390 391 393 394

Composite? yes yes yes yes

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

Answer 2

Answer:

5×7×11+7=

(5×11+1)7=

56×7=

2×23×7

hence it is a composite number...

hence proved

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