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#1 2006-12-23 04:19:21
- balasvce
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- Registered: 2006-12-20
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try this one
There are 4 books , out of which an arrangement is to be made so that ,when 2 books are pickedup, particular 2 books will always be together.how many possible arrangements can be made?
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#2 2006-12-23 04:37:00
- Stanley_Marsh
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- Registered: 2006-12-13
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Re: try this one
what'd you mean by particular 2 books, dont get it , 6 arrangements perhaps?
Last edited by Stanley_Marsh (2006-12-23 04:37:39)
Numbers are the essence of the Universe
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#3 2006-12-23 05:09:26
- Devantè
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- Registered: 2006-07-14
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Re: try this one
PP BB
PB PB
BP BP
PB BP
BP PB
BB PP
6 arrangements.
Or, if I'm thinking about it the wrong way, 4! = 24.
B = Book
P = Particular Book
I'm almost certain 6 arrangements is right.
Also, could you please show some attempt next time?
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#4 2006-12-23 05:14:55
- Stanley_Marsh
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Re: try this one
I bound 2P together , there are three rooms _B_B_ , the 2p can be placed in them , and the 2p can also switch position themself, so 3x2=6 arrangements
Numbers are the essence of the Universe
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#5 2006-12-23 05:16:38
- Devantè
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Re: try this one
This problem is not well enough explained...
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#6 2006-12-23 05:18:53
- Stanley_Marsh
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Re: try this one
Not sure
Numbers are the essence of the Universe
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#7 2006-12-23 11:43:26
- Toast
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- Registered: 2006-10-08
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Re: try this one
There are 4 books, out of which an arrangement is to be made so that when 2 books are picked up, those particular 2 books will always be together. How many possible arrangements can be made?
I'm pretty sure this is how he meant it.
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