Explain why (5×7×13+7) is composite number
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hey here is your answer : -----
see composite numbers are those which have at least three factors that are one, itself and any other number so in the above question the number is
5*7*13 + 7
we can take 7 as common
7(5*13 + 7)
7( 65 + 7 )
7(72)
7*2*2*2*3*3
so as you can see we are left with a number which has a lot of factors 2 of which are confirmed that are 1 and itself and except that it has 7,2,3 also its factors so we can say it's a composite number
see composite numbers are those which have at least three factors that are one, itself and any other number so in the above question the number is
5*7*13 + 7
we can take 7 as common
7(5*13 + 7)
7( 65 + 7 )
7(72)
7*2*2*2*3*3
so as you can see we are left with a number which has a lot of factors 2 of which are confirmed that are 1 and itself and except that it has 7,2,3 also its factors so we can say it's a composite number
Rrrrrrrttt:
Thnx
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??
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