Question bank/JEE Main/Mathematics
JEE MainMathematics
If letters of the word 'KUBER' are written in all possible
orders and arranged as in a dictionary, then rank of the word 'KUBER'
will be
Show answer and solution
Alphabetical order of these letters is B, E, K, R, U
Total words starting with = 4! = 24
Total words starting with = 4! = 24
Total words starting with 'KB' = 3! = 6
Total words starting with 'KE' = 3! = 6
Total words starting with 'KR' = 3! = 6
Next word will be KUBER
Thus rank of the word "KUBER" = 24 + 24 + 18 + 1 = 67
Total words starting with = 4! = 24
Total words starting with = 4! = 24
Total words starting with 'KB' = 3! = 6
Total words starting with 'KE' = 3! = 6
Total words starting with 'KR' = 3! = 6
Next word will be KUBER
Thus rank of the word "KUBER" = 24 + 24 + 18 + 1 = 67
Source: Grass-G / M-02 Mathematics Paper-2.docx
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