Question

Why is this composite
(17x11x2)+(17x11x5)

Answer 1

17(11×2+11×5)
17(77)
here no. has more than 2 factors

Answer 2

17×11×2=374
this 374 is an even composite number...
and
17×11×5=935 which is a off composite number...
as we add 374 and 935 we get 1309....
this number is divisible in 7 number and so on..
so a number which is divisible in any prime number is called a composite number....