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Permutations And Combinations

Question

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How many 5-digit telephone numbers can be formed using digits 0, 1,2, 3, 4, 5, 6, 7, 8, 9 if each number starts with 01 and no digit appears more than once?

Solution

Solution not provided.
Ans. 336

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.

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation