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Home  >>  CBSE XI  >>  Math  >>  Permutations and Combinations

True-or-False:In the permutations of n things,r taken together,the number of permutation in which m particular things occur together is $(n-m)P_{r-m}\times rP_m$

$\begin{array}{1 1}(A)\;\text{True}\\(B)\;\text{False}\end{array} $

1 Answer

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In the permutations of n things r taken together the number of permutations in which m particular things occur together is =$(n-m)P_{r-m}$
Hence it is false
answered May 16, 2014 by sreemathi.v
 

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