Question 1044203: What is the sum of the first 50 counting numbers?
Please give me some ideas to solve this problem! Thanks! Found 2 solutions by reviewermath, ikleyn:Answer by reviewermath(1029) (Show Source):
You can put this solution on YOUR website! What is the sum of the first 50 counting numbers?
Solution:
Add the first and last: 1 + 50 = 51
Add the 2nd and the 2nd to the last: 2 + 49 = 51
and so on: 3 + 48 = 51
up to: 25 + 26 = 51
So we add 51 + 51 + 51 + ...+ 51 = 51 times 25 =
In general, the sum of the first n counting numbers is
