Permutations And Combinations

Question
CBSEENMA11014157

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

Solution

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.