Given a+b =1, b+c=2 and c+a=3, what is the average of a, b and C?

A 3

B 2

C 1

D None of the above

Correct Answer: Option C

here, a+b =1 b+c=2 c+a=3 so,a+b+b+c+c+a=1+2+3 so,2(a+b+c)=6 so,a+b+c=3 so. average = a+b+c/3=3/3=1