Permutations And Combinations

Question
CBSEENMA11014129

Prove that : P (10, 3) = P (9, 3) + 3P (9, 2)

Solution

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Some More Questions From Permutations and Combinations Chapter

Determine K, so that K + 2, 4K – 6 and 3K – 2 are three consecutive terms of an A.P.