Question

Explain 7×6×5×13+13 is a composite number

Answer 1

Answer:

13(7×6×5+1)

13(211)

so, here we see that this no. have 3 factor so, this is a composite num number.

hope it helps you....

Answer 2

Answer:

We know.

A composite number has more than 2 factors .Only composite numbers can be expressed in the form of product of two numbers other than 1 and itself .

= 7*11*13+13

= 13 * ( 7 * 11 + 1 )

= 1 * 13 * ( 7*11 + 1 )

7*11*13+13 can be expressed as product of other numbers

Therefore , 7*11*13+13 is a composite number

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