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A Vstudy problem

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A Vstudy problem [#permalink] New post 25 Aug 2003, 06:44
Can anyone help me figure this problem ?

Answer is C.


Thank you.
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 [#permalink] New post 25 Aug 2003, 06:49
minimum pat: 2 ups, 3 rights... UURRR...
now, in how many ways can we arrange UURRR? 5!/(3!*2!)=10
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 [#permalink] New post 25 Aug 2003, 06:58
javropu wrote:
minimum pat: 2 ups, 3 rights... UURRR...
now, in how many ways can we arrange UURRR? 5!/(3!*2!)=10


I agree with your answer, but just to clarify, the route is 3 ups and two rights.

UUURR = (5!)/(3!*2!) = 10
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 [#permalink] New post 02 Jul 2005, 18:28
mciatto wrote:
javropu wrote:
minimum pat: 2 ups, 3 rights... UURRR...
now, in how many ways can we arrange UURRR? 5!/(3!*2!)=10


I agree with your answer, but just to clarify, the route is 3 ups and two rights.

UUURR = (5!)/(3!*2!) = 10


plz can anyone tell me from what formula you got that (5!)/(3!*2!) =
and why plz show full explanation
thanks

regards mandy
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 [#permalink] New post 03 Jul 2005, 01:29
the formula is

(total # of squares)!/((# of squares on one side)!(number of squares on the other side)!)
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 [#permalink] New post 03 Jul 2005, 14:06
sparky wrote:
the formula is

(total # of squares)!/((# of squares on one side)!(number of squares on the other side)!)


:) Thanks Sparky just one thing please the total number of square is 6 But the previous posts had 5
my first instinct was to think about permutations
can u tell me more about this formula

regards

mandy
  [#permalink] 03 Jul 2005, 14:06
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