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Permutation question

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saxenankit
 Post subject: Permutation question
 Post Posted: Thu Apr 28, 2011 4:38 am 
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Students


Posts: 69
Dear experts,

Please have a look at the below question -

In how many of ways can 5 balls be placed in 4 tins if any number of balls can be placed in any tin?
(A) 5C4
(B) 5P4
(C) 5^4
(D) 4^5
(E) 5^5

Source : Nova Maths Bible
OA: D

I think the answer should be C. Since 1 tin can five balls, 4 tins can have 5.5.5.5 = 5^4

Please let me know your thoughts.

Regards,
Ankit Saxena
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tim
 Post subject: Re: Permutation question
 Post Posted: Mon May 02, 2011 2:59 pm 
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ManhattanGMAT Staff


Posts: 4462
Location: Southwest Airlines, seat 21C
invalid question. sorry. we have to know more about the balls; are they identical i.e. indistinguishable, or does it matter which ball is in which tin? do yourself a favor and stick to GMAT questions and MGMAT questions, and you won' have to deal with questions that don't actually work..

_________________
Tim Sanders
Manhattan GMAT Instructor
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