The sum of the integers from 1 to 620 is as follows: 192,510 To get the answer above, you could add up all the digits like 1+2+3... +620, but there is a much easier way to do it! Use the following formula: n(n + 1)/2 = Sum of Integers In this case, n=620, thus you get your answer by entering 620 in the formula like this: 620(620 + 1)/2 = 192,510
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