Permutations & Combinations Mcqs

Q.  Using all the letters of the word “NOKIA”, how many words can be formed, which begin with N and end with A?

a. 3
b. 6
c. 24
d. 120


ANSWER: See Answer
 
There are five letters in the given word.

Consider 5 blanks ….
The first blank and last blank must be filled with N and A all the remaining three blanks can be filled with the remaining 3 letters in 3! ways.
The number of words = 3! = 6.
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