SOLUTION: what is the sum of the first 334 natural numbers?

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Question 691617: what is the sum of the first 334 natural numbers?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
There's a formula for that. You can prove it ( sort of )
by taking some examples
Sum 1 through 13 = 91 ( on my calculator )
The formula is:
+S+=+%281%2F2%29%2A13%2A14+
+S+=+91+
So, the sum of 1 through 334 is
+S+=+%281%2F2%29%2A334%2A335+
+S+=+%281%2F2%29%2A111890+
+S+=+55945+