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Permutations , combinations and binomial expansion — Statistics STD 11 Commerce — Question

Gujarat BoardEnglish MediumSTD 11 CommerceStatisticsPermutations , combinations and binomial expansion1 Mark
Question
Write the mathematical relation between Permutaion and Combination.
✓

Answer

" ${ }^{" P},={ }^n C _\gamma \times r !$

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