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In nPr=n(n-1)(n-2).............(n-r+1),the number of factors is How to find factors in this question?
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Best Answer
This is nothing but permutation of n things when r are chosen at a time. The formula shall have r factors. It's a part of theorem itself. Can refer pg 5.4 of ICAI SM for explanation. So, say permutation of 6 objects, when 2 are chosen at a time will be given by 6P2 = 6 (in first place) X 5 (in second place) - it has 2 factors.
Sahibdeep Singh
This is nothing but permutation of n things when r are chosen at a time. The formula shall have r factors. It's a part of theorem itself. Can refer pg 5.4 of ICAI SM for explanation. So, say permutation of 6 objects, when 2 are chosen at a time will be given by 6P2 = 6 (in first place) X 5 (in second place) - it has 2 factors.
TQ so much sir I understand good explanation
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