Section: Mathematics Knowledge

28) If the average of 7 consecutive even numbers is 10, then the smallest number is:

1. 2
2. 4
3. 5
4. 6

One trick for dealing with consecutive numbers is to realize that the middle number in a group of consecutive numbers is equal to the average of the numbers. So of the seven consecutive even numbers, the middle or fourth number is 10, the third number is 8, the second number is 6, and the first or smallest number is 4.