Question

. Explain why 7 x 11 x 13 + 13 and 7 x 6 x 5 x 4 x3 x 2 x 1 +5 are composites numbers.
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Answer 1

Answer:

sol-

we have =7*11*13+13=1014

then prime factor of 1014=2*3*13*13

the product of two primes . so it is composite number.

we have 7*6*5*4*3*2*1+5= 5045

5045= 5*1009

so it is a composite