check whether 5.3.11+11 and5.7+7.3 are a composite number and justify your answer
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Given numbers 5 × 3 × 11 + 11 and 5 × 7 + 7 × 3
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First take the first number ;
5 × 3 ×11 + 11
= 11 ( 5 × 3 + 1 )
= 11 × 1 × ( 5 × 3 + 1) .
As the above number has factors of 11 , (5×3+1 ) other than one and itself. It is a composite number .
Now take the secondnumber ;
5 × 7 + 7 × 3
= 7 ( 5 + 3 )
= 7 × 1 × ( 5 + 3 )
As the above number has factors of 7 ,(5 + 3 ) other than one and itself. It is a composite number .
.
First take the first number ;
5 × 3 ×11 + 11
= 11 ( 5 × 3 + 1 )
= 11 × 1 × ( 5 × 3 + 1) .
As the above number has factors of 11 , (5×3+1 ) other than one and itself. It is a composite number .
Now take the secondnumber ;
5 × 7 + 7 × 3
= 7 ( 5 + 3 )
= 7 × 1 × ( 5 + 3 )
As the above number has factors of 7 ,(5 + 3 ) other than one and itself. It is a composite number .
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