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CBSE Class 9 Answered

Explain why 5•11•17+17 is composite no. While 7•6•3•5+5 is not a composite no.
Asked by adityaahuja099 | 05 Jul, 2018, 10:09: AM
answered-by-expert Expert Answer
begin mathsize 18px style straight x equals 5 cross times 11 cross times 17 plus 17
equals 17 cross times open square brackets 5 cross times 11 plus 1 close square brackets
equals 17 cross times 56
17 space is space straight a space factor space of space the space given space number space
7 cross times 6 cross times 3 cross times 5 plus 5
equals 5 cross times open square brackets 7 cross times 6 cross times 3 plus 1 close square brackets
equals 5 cross times 127
5 space is space straight a space factor space
both space are space composite end style
Answered by Arun | 05 Jul, 2018, 10:45: AM
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