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#### GRAPE-PEAR=APPLE

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#### Sum of 5 and the number X

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#### in the expansion of (3x+1)^n, the coefficient of the term in x^2 is 135n, where n E Z+. Find n.

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#### if you had a 3inch pipe, 20 feet long, full of water how many gallons of water would be in this pipe

04/22/16

#### Word problem

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