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Find the sum of the series 15/42 + 15/56 + 15/72 + 15/90 + ... + 15/9900

 Oct 25, 2021
 #1
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∑(n, 1, 94, 15 / ((n +5)*(n+6)) ==It sums up to 47 / 20

 Oct 25, 2021

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