JEE Main 2013 — Permutation Combination Question with Solution
JEE Main 2013 (25 Apr Online)
Question
5 - digit numbers are to be formed using , 9 without repeating the digits. If be the number of such numbers that exceed 20000 and be the number of those that lie between 30000 and 90000 , then is:
Choose an option
Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Total no, of ways
Since all numbers are
all numbers can come at first place.
Total no. of ways
( and 9 can not be put at first place)
So,
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This is a previous-year question from JEE Main 2013, covering the Permutation Combination chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.