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The wild geese fly in V- formation A formation of wild geese has 24 geese in the last row 23 geese in the second to the last row ,22 geese in the next row , and so on. how many geese are there altogether

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Use this formula: f(n) = n(n+1)/2, where "n" is the last number of the sequence of numbers you are adding (in this case, "n" would be "24").
So: f(24) = 24(24 + 1) / 2 f(24) = 600 / 2 f(24) = 300
There are 300 geese altogether

Posted on Mar 16, 2011


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Posted on Jan 02, 2017


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