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MBA.Aspirant: Master | Next Rank: 500 Posts; Posts: 401; Joined: Tue May 24, 2011 1:14 am; Thanked: 37 times; Followed by:5 members

by MBA.Aspirant » Tue Jul 05, 2011 11:11 pm

In how many ways 3 Xs and 2 Ys can be arranged in a line such that no Ys are together?

Source: Beat The GMAT — Problem Solving | Tue Jul 05, 2011 11:11 pm

Frankenstein: Legendary Member; Posts: 1448; Joined: Tue May 17, 2011 9:55 am; Location: India; Thanked: 375 times; Followed by:53 members

by Frankenstein » Tue Jul 05, 2011 11:16 pm

Hi,
_X_X_X_
Hi, we need to pick 2 places for Y from the 4 blanks. This can be done in 4C2 = 6 ways.

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