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11TH · MATH

Question 2

menu_bookSolutionmenu_bookTheorymenu_book•(i)n3−nn^3 - nn3−nmenu_book•(ii)n(n−1)(n−2)⋯(n−r+1)n(n-1)(n-2)\cdots(n-r+1)n(n−1)(n−2)⋯(n−r+1)
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11TH · MATH

Question 2

menu_bookSolutionmenu_bookTheorymenu_book•(i)n3−nn^3 - nn3−nmenu_book•(ii)n(n−1)(n−2)⋯(n−r+1)n(n-1)(n-2)\cdots(n-r+1)n(n−1)(n−2)⋯(n−r+1)
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Accedmychevron_right11thchevron_rightmathchevron_rightPermutations And Combinationschevron_rightExercise 7.1

( \dfrac{(n+1)!}{(n-2)!} )

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