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For each positive integer n, the nth term of the sequence S is 1+$$(-1)^{n}$$.
Quantity A:The sum of the first 39 terms of S
Quantity B:39
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A.Quantity A is greater.
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B.Quantity B is greater.
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C.The two quantities are equal.
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D.The relationship cannot be determined from the information given.
B显示答案
