Fluttershutter 2,935 May 28 Share May 28 What do all the numbers from 1 to 100 add up to and how do you figure it out without adding every single number? Spoiler The answer is 5050. You can do this with ay string of numbers. You get it by adding the first and last number and multiplying it by half the number of numbers, So: (1+100) x (100/2)-5050 1 Link to comment Share on other sites More sharing options...
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