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Eleven members of Club A are also members of Club B, and

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by BTGmoderatorDC » Thu Jan 02, 2020 8:53 pm
Eleven members of Club A are also members of Club B, and five members of Club B are also members of Club C. How many members of Club A are also members of Club C?

(1) Club B has 16 members.
(2) Exactly two people from Club C are also members of Club A.




OA B

Source: Veritas Prep
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Source: — Data Sufficiency |

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by Jay@ManhattanReview » Thu Jan 02, 2020 9:59 pm
BTGmoderatorDC wrote:Eleven members of Club A are also members of Club B, and five members of Club B are also members of Club C. How many members of Club A are also members of Club C?

(1) Club B has 16 members.
(2) Exactly two people from Club C are also members of Club A.

OA B

Source: Veritas Prep
Let's take each statement one by one.

(1) Club B has 16 members.

We do not have information about members of Club A and Club C. Insufficient.

(2) Exactly two people from Club C are also members of Club A.

This information is exactly the same... If we swap Club C with Club A, we get the answer. Sufficient.

The correct answer: B

Hope this helps!

-Jay
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