1. smallest even number = x
2. next even number = x+2
3. next even number = x+4
4. next even number = x+6
5. next even number = x+8
6. next even number = x+10
7. last even number = x+12
--------------------------------
sum = 7x+42
Average = = = = x+6 = 42
x = 36
Answer: 36
Checking:
= = 42
Edwin