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GMAT Data Sufficiency Practice 80

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Diffculty: Easy

Consider the series \( b_{1}, b_{2}, b_{3}, ..., b_{p-1}, b_{p} \) where p is a positive integer. How many terms are there in this sequence?

(1) The arithmetic mean of the p terms in this series is 7.

(2) The total of all the terms in the series  \( b_{1}, b_{2}, b_{3}, ..., b_{p-1}, b_{p} \)is given by \(p(p + 1)\).

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    (A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
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    (B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
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    (C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
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    (D) EACH statement ALONE is sufficient.
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    (E) Statements (1) and (2) TOGETHER are NOT sufficient.
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