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​How many different word, with or without meaning, can be formed by using the letter of the word COVID?
Question

How many different word, with or without meaning, can be formed by using the letter of the word COVID?

A.

60

B.

150

C.

100

D.

120

Correct option is D

Given:
Word = COVID
Number of letters = 5
All letters are distinct

Formula Used:
Number of arrangements of n distinct letters = n! (n factorial)

Solution:
Since all 5 letters in the word COVID are different:

Total number of possible words = 5! = 5 × 4 × 3 × 2 × 1 = 120

Ans. (d) 120

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