CBSE Class 11-science Answered
find out
Asked by NikhilD | 14 Apr, 2010, 12:08: PM
Expert Answer
(a) nPm
First person can take any of n seats, 2nd can take any of remaining seat,
hence number of ways,
n(n-1)(n-2)..(n-m+1)
which can be written as,
n!/(n-m)! = nPm
Regards,
Team,
TopperLearning.
Answered by | 14 Apr, 2010, 04:07: PM
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