The number of different words that can be formed out of the letters of the word 'MORADABAD' taken four at a time is?
Explanation for the correct option:
Find the number of four letters words.
The word 'MORADABAD' is given.
Since there are letters in total out of which are and are .
Now, the number of words formed by all different letters is given by .
The number of words formed by and is given by .
The number of words formed by and two different letters is given by .
The number of words formed by and one different letter is given by .
The number of words formed by and two different letters is given by .
Therefore, the total number of four letters words formed out of the letters of the word ‘MORADABAD’ is given by .
Hence, option is the correct answer.