GMAT Practice Question Set #58 (Question 172-174)

Problem Solving Question #172: Mixed Tennis  
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A group of 4 married couples want to play mixed tennis, but each married individual does not want to be on the same team as his/her spouse. How many possible games can be played between two teams?

(A)

12

(B)

21

(C)

36

(D)

42

(E)

46

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