how will you show that (17*11*12)+(17*11*5) is a composite number
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The numbers are prime numbers and composite numbers.
Prime numbers can be divided by 1 and itself.
A composite number has factors other than 1 and itself.
(17∗11∗2)+(17∗11∗5)
(17∗11)(2+5)=17∗11∗7
The given expression has 7,11 and 17 as its factors.
∴ It is a composite number.
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