Q.
If all the permutations of the letters A,B,C,D and E are written as in a dictionary, then the rank of the arrangement DEBAC is
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a
90
b
91
c
92
d
93
answer is D.
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Detailed Solution
Number of letters which follow and that precede it in English alphabet ∴ Required rank =34+33+12+01+1 =72+18+2+1=93
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