Question

Suppose n is an integer. Select all statements below that are true:

• n? + n is always an even integer
• n2 + n is always an even integer when n is even On? +n is always an even integer when n is odd
• n2 + n is never an even integer when n is odd
• n2 + n is is never an even integer
• n2 + n is sometimes an even integer

Answer 1

A,B: odd+odd = even, even+even = even