BITSAT 2009
Exam BITSAT
Year 2009
Subject Mathematics
Chapter Binomial Theorem BITSAT 2009 · Mathematics · Binomial Theorem
The letters of the word TOUGH are written in all possible orders...
The letters of the word TOUGH are written in all possible orders and these words are written out as in a dictionary, then the rank of the word TOUGH is
Step-by-step solution
Rank = ( 4 ! × 3 ) + ( 3 ! × 2 ) + ( 2 ! × 2 ) + 1 = 72 + 12 + 4 + 1 = 89 \begin{aligned}& \text{ Rank }=(4 ! \times3)+(3 ! \times2)+(2 ! \times2)+1 \\
& =72+12+4+1=89
\end{aligned} Rank = ( 4 ! × 3 ) + ( 3 ! × 2 ) + ( 2 ! × 2 ) + 1 = 72 + 12 + 4 + 1 = 89 )
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