Explain why 7x11x13+13 is a composite number
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Answered by
198
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+13can be expressed as product of other numbers
Therefore , 7*11*13+13 is a composite number
= 7*11*13+13
= 13 * ( 7 * 11 + 1 )
= 1 * 13 * ( 7*11 + 1 )
7*11*13+13can be expressed as product of other numbers
Therefore , 7*11*13+13 is a composite number
Answered by
103
7×11×13+13
13(7×11×1+1)
1×13(7×11+1)
It has more than 2 factors
Therefore it is a composite number
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