Sate whether 7 × 11 × 13 + 7 is a composite number or a prime number. How will you show that (17×11×2)+(17×11×5) is a composite number
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Composite number= product of prime numbers. Any Integer greater than 1, either be a prime number or can be written as a product of prime factors. It is the product of prime factors 7, 2 and 3. Hence, it 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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