Using all the letters of the word "NOKIA", how many words can be formed, which begin with N and end with A?
Q1. Using all the letters of the word "NOKIA", how many words can be formed, which begin with N and end with A?
Answer: 6
Explanation: With N fixed at start and A fixed at end, the 3 middle letters (O, K, I) can be arranged in 3! = 6 ways.