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Two couples

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Two couples

by crackgmat007 » Sun Oct 11, 2009 10:19 am
Two couples and one single person are seated at random in a row of five chairs. What is the probability that neither of the couples sits together in adjacent chairs?

1/5
1/4
3/8
2/5
1/2

pls explain
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by CrackGMAC » Mon Oct 12, 2009 7:02 am
I am getting 4/5 as answer. 1/5 is for they will sit together.

Can you please confirm everything posted in correct
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by crackgmat007 » Mon Oct 12, 2009 7:57 pm
yes the question is correctly posted.
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