Fri November 09, 2012 By: Sugam Prasad

how can we judge that the question is of permutation or can we apply the formula ..

Expert Reply
Fri November 09, 2012
If there is only selection then it is combination.
If there are arrangements also, if arranging things matters then it is permutation.
If it does not matter in which order the things are picked up then it is combination.
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