Set A, B, C have some elements in common. if 16 elements are

by **rschunti** Fri Dec 14, 2007 5:17 pm

Set A, B, C have some elements in common. if 16 elements are in both A and B, 17 elements are in both A and C, and 18 elements are in both B and C, how many elements do all three of the sets A, B, and C have in common?

1). of the 16 elements that are in both A and B, 9 elements are also in C

2). A has 25 elements, B has 30 elements, and C has 35 elements

This is GMATPREP question.What is the best approach to answer this question. Pls provide detailed steps and short cuts. Thanks

by **RonPurewal** Mon Dec 17, 2007 4:26 am

http://www.manhattangmat.com/forums/set ... t1921.html