Permutations And Combinations


How many numbers greater than 40000 can be formed using digits 2, 3, 4, 5, 6, no digit being repeated in any one?


Solution not provided.
Ans. 72

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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.