If a & b are odd positive &a>b then show out of (a+b)/2 & (a-b)/2 one is odd & one is even

If a & b are odd positive &a>b then show out of (a+b)/2 & (a-b)/2 one

1.	If a & b are odd positive &a>b then show out of (a+b)/2 & (a-b)/2 one is odd & one is even
Answer» Explain Both will be even