Question 18
Permutations and CombinationsSimplify nP4/nC4
- A.24
- B.18
- C.12
- D.6
Show the answer and explanation
Answer: A (24)
Explanation
ⁿP₄ = n!/(n − 4)! and ⁿC₄ = n!/((n − 4)! 4!), so the ratio is 4! = 24.
Simplify nP4/nC4
Answer: A (24)
ⁿP₄ = n!/(n − 4)! and ⁿC₄ = n!/((n − 4)! 4!), so the ratio is 4! = 24.