In a set of three numbers, the average of first two numbers is 7, the average of last two numbers is 9 and the average of first and last number is 8. Find the average of these numbers.
1
8
2
9
3
7
4
11
5
6
In a set of three numbers, the average of first two numbers is 7, the average of last two numbers is 9 and the average of first and last number is 8. Find the average of these numbers.