Find the SUM of all the even numbers from 2 to 100. (hint: find a pattern)


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There are 100 numbers from 1 to 100, therefore there are 50 even numbers. You can find 25 "highlow" PAIRS of numbers that sum to 102, e.g. "2 & 100", "4 & 98", "6 & 96", etc... until you exhaust all possible pairs with "48 & 50." Therefore, the answer is 25 x 102 = 2,550 
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