I don't how I would do this exactly..
What conjecture can you make about the sum of the first 10 positive even numbers?
2 = 2 = 1 times 2
2 + 4 = 6 = 2 times 3
2 + 4 + 6 = 12 = 3 times 4
2 + 4 + 6 + 8 = 20 = 4 times 5
2 + 4 + 6 + 8 + 10 = 30 = 5 times 6
Choices:
o The sum is 9 times 10
o The sum is 10 times 10
o The sum is 11 time 12
o The sum is 10 times 11