Q97 / 160 · AP EAMCET 2020 (17 Sep Shift 2) · Mathematics

Letters of the word 'GOVIND' are permuted and arranged as in a dictionary, then the number of words that appear after the word 'GOVIND' is ____

  • A
    519
  • B
    510
  • Correct answer
    C
    506
  • D
    511

Solution

Word is 'GOVIND' total words possible \(=6 !=720 \text { words }\) Now we find rank of word GOVIND,- Number of words starting with \(D=5\) ! \(=120\) words Number of words starting with G and second letter D Figure
\(=24 \text { words }\) G and second Letter IFigure
\(\mathrm{G}\) and second Letter \(\mathrm{N}\)Figure
Now words with G and next letter \(\mathrm{O}\) and IIIrd Letter DFigure
Now words with \(\mathrm{G}\) and next letter \(\mathrm{O}\) and third Letter I.Figure
Similarly,Figure
Now, we have,Figure
andFigure
And thenFigure
So, total words \(=\) rank \(=120+24 \times 3+6 \times 3+4=214\) th words So, Number of words after GOVIND \(=720-214=506\) Words

Hence, the correct answer is option: 'C'.

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