Could you add 1 + 2 + 3 ..... + 100 in 10 Seconds?
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Well if you think about it 1 + 100 = 101 and 2 + 99 = 101
So all you need to do is 101 x 50 = 5050.
Now you can tease your friends with this
Oct 20, 2006
Adding numbers
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