In how many ways, the letters of the word 'BANKING' can be arranged ?



In how many ways, the letters of the word 'BANKING' can be arranged ?

A. 5040

B. 2540

C. 5080

D. 2520

Answer : D. 2520


Explanation:

    Total letters = 7, but N has come twice.
    So, the required number of arrangements
    = 7! / 2!
    = 7 × 6 × 5 × 4 × 3 × 2! / 2!
    = 2520


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