How many different words, with or without meaning, can be formed by using the letters of the word COVID?
[amp_mcq option1=”60″ option2=”150″ option3=”100″ option4=”120″ correct=”option4″]
This question was previously asked in
UPSC CAPF – 2021
In this case, n = 5.
Number of words = 5! = 5 × 4 × 3 × 2 × 1.
5! = 20 × 6 × 1 = 120.