How many distinct arrangements can be made from the letters of the word "BOOK"?
Maths / 100 Most Repeated MCQs of Math — Multiple-choice practice
- A. 12
- B. 20
- C. 10
- D. 25
Correct answer
12
Explanation
Explanation The word BOOK has 4 letters, where ' O ' appears twice. The formula for distinct permutations is: 4 ! 2 ! = 24 2 = 12 Since ' O ' is repeated, we divide by 2 ! to avoid overcounting.
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