Home MCQs CSS Statistics Question #1989
Back to Questions
CSS Statistics QUESTION #1989
Question 1
The number of permutations of 3 letters chosen from 4 distinct letters A, B, C, D is:
  • \(4\)
  • \(12\)
  • \(24\)✔️
  • \(64\)
Correct Answer Explanation
The number of permutations \(= P(4,3) = \dfrac{4!}{(4-3)!} = \dfrac{24}{1} = 24\). This counts ordered arrangements. The number of combinations would be \(C(4,3)=4\), but permutations account for all orderings of each combination (each set of 3 has \(3! = 6\) arrangements, so \(4 \times 6 = 24\)).