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11 Dec 2003, 04:39
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There are 4 books on physics and 2 books on maths.Find the no. of ways in which these books can be arranged so that the books on maths are not together!
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11 Dec 2003, 05:01
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please explain ...
. when it is 4 physics and 2 maths it should be 6!-5!x2=720-240=480 
