Question

Whether 5x3x11+11 and 5x7+7x3 are composite no. And justify

Answer 1

5×3×11+11=15×11+11=165
composite number are numbers which have common factor other than 1.
165 has common other than 1
they are
1×165
3×55
5×33
33×5
55×3
165×1
so it is a composite number


now next is 5×7+7×3=35+21=56

56 is also composite number as its factors are

1,2,4,7,8,,14,28,56


so it is a composite number


hope it helps u...

:)

Answer 2

Answer: SOLUTION IS IN THE ABOVE ATTACHMENT