How Do You Simplify 3 Composite Sums!?
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How Do You Simplify 3 Composite Sums!?

Category: FAQ   Time: 2009-07-09   Tags: , ,

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"How Do You Simplify 3 Composite Sums!?" was posted on Thursday, July 9th, 2009 at 6:38 pm.

2 Responses to “How Do You Simplify 3 Composite Sums!?”
  1. testmath(2009-07-09):

    you have to start form rigth to left
    the first one is from the right is equal to j
    now the second is equal to i(i+1)/2
    the last one is 1(1+1)2 + 2(2+1)/2+ . . .+7(7+1)/2
    =84

  2. testmath…(2009-07-10):

    That’s the same as 7-sigma- k=1. So the answer is 1+1+1+1+1+1+1 = 7

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