1 + 1/2 + 1/4 + 1/7 + 1/14 + 1/28 = ?

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Answer:

1 + 1/2 + 1/4 + 1/7 + 1/14 + 1/28 = 1 + (14 + 7 + 4 + 2 + 1)/28 = 1 + 28/28 = 1 + 1 = 2

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