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tim555 · 07-21-2005, 04:03 AM

From the first practice test. page 427 Section 9 # 16

16. Set X has x members and set Y has y members. Set Z consists of all members that are in either set X or set Y with the exception of the k common members (k>0). Which of the following represents the number of members in Set Z?

A. x+y+k
B. x+y-k
C. x+y+2k
D. x+y-2k
E. 2x+2y-2k

I am sure most of you have done this problem by now, and the answer is D. Can anyone of you explain how you came up with the right answer? What approaches did you use, because i found this one to be challenging. It seems like a logic question tho.

07-21-2005, 04:03 AM	#1
tim555 Junior Member Join Date: Jul 2005 Location: South Carolina Posts: 234	Blue Book Practice Question From the first practice test. page 427 Section 9 # 16 16. Set X has x members and set Y has y members. Set Z consists of all members that are in either set X or set Y with the exception of the k common members (k>0). Which of the following represents the number of members in Set Z? A. x+y+k B. x+y-k C. x+y+2k D. x+y-2k E. 2x+2y-2k I am sure most of you have done this problem by now, and the answer is D. Can anyone of you explain how you came up with the right answer? What approaches did you use, because i found this one to be challenging. It seems like a logic question tho.