How many words with or without meaning can be formed by using all the letters of the word ‘NCFSE’ using each letter exactly once?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 120
The word NCFSE has 5 letters and all of them are different, so every arrangement of the five gives a distinct word.
The number of arrangements is therefore 5! = 5 × 4 × 3 × 2 × 1 = 120. Had any letter been repeated, the count would have had to be divided by the factorial of the repetitions.