In how many different ways can letters of the word OFFICES be arranged?
A. 2520
B. 5040
C. 1850
D. 1680
E. None of these
Answer: Option A
Solution (By Examveda Team)
The given word contains 7 letters of which F is taken 2 times.∴ Required number of ways
$$\eqalign{ & = \frac{{7!}}{{2!}} \cr & = \frac{{7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1}}{{2 \times 1}} \cr & = 2520 \cr} $$
This Question Belongs to Arithmetic Ability >> Permutation And Combination
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