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N!(n-r)!, का मान निकालिए जब n = 9, r = 5

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Question

`(n!)/((n-r)!)`, का मान निकालिए जब n = 9, r = 5

Sum
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Solution

जबकि n = 9, r = 5  `(n!)/((n-r)!)  = (9!)/((9 - 5)!) = (9!)/(4!) = (9  xx 8  xx 7  xx 6  xx  5  xx  4!)/(4!)`

= 9 x 8 x 7 x 6 x 5 = 15120 

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क्रमचय
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Chapter 6: क्रमचय और संचय - ​प्रश्नावली 6.2 [Page 114]

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NCERT Ganit [Hindi] Class 11
Chapter 6 क्रमचय और संचय
​प्रश्नावली 6.2 | Q 5. (ii) | Page 114
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