Q. 94.2( 9 Votes )

Is (7 x 5 x 3 X 2 + 3) a composite number? Justify your answer.

Answer :

(7 x 5 x 3 x 2 + 3) = (210 + 3) = 213


And 213 = 71 x 3


As, this number is expressible as product of two no's other, the given number is composite.


[Composition no's are those no's which has factors other than 1 and itself]


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