SOLUTION: how do you find the sum of the first 20 odd numbers?

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Question 998390: how do you find the sum of the first 20 odd numbers?
Found 2 solutions by JellyJello, Alan3354:
Answer by JellyJello(2) About Me  (Show Source):
You can put this solution on YOUR website!
You can find the sum of the first 20 odd numbers by simply adding them all.
1+3+5+7+9+11+13+15+17+19+21+23+25+27+29+31+33+35+37+39=400
You are welcome! :)

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
how do you find the sum of the first 20 odd numbers?
= 20^2
= 400