Guido KIRA odds and evens

KIRA did not have to add the odds and the evens. It was a trick question. Each difference is one.
one times five = five

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asked by Damon
  1. By the way, story of Gauss in elementary school:

    add numbers from 1 to 100 :

    instant reply: average = 50.5
    50.5 * 100 = 5050

    alternate reply
    1 + 2 + 3 ...... 100
    +
    100 + 99 + 98 ..... 1
    = 101 + 101 + 101 .... +101
    so
    2 S = 100*101 = 10100
    so s = 5050

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    posted by Damon

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