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Find R If 5p_R = 2^6 P_(R-1) Permutations, - Mathematics

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प्रश्न

Find r if `""^5P_r = 2^6 P_(r-1)`

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उत्तर

∴0 ≤ ≤ 5

Hence, r ≠ 10

r = 3

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अध्याय 7: Permutations and Combinations - Exercise 7.3 [पृष्ठ १४८]

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एनसीईआरटी Mathematics [English] Class 11
अध्याय 7 Permutations and Combinations
Exercise 7.3 | Q 7.1 | पृष्ठ १४८

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