Question

Explain why 5×11×17+17 is a composite number while 7×6×3×5+5 is not a composite number

Answer 1

5 × 11 × 17 + 17 = 942

7× 6 × 3 × 5 + 5 = 633

942 is a composite number because it is divisible by even number ,not by all but it is divisible by even number and it is not a prime number.

633 is not a composite number because it is not divisible by any even number. all the composite number are divisible by a even number and often by 2.

Answer 2

Answer:

5*11*17+17=952

7*6*3*5+5=635

952 is divisible by 2 but 635 is not.So, 635 is not a composite number.