defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Permutations and Combinations
There are n different caps available at a shop and n > 3. How many different choices of 3 caps can be made?
1
3 × n!
2
\(\rm \dfrac{n!}{3}\)
3
\(\rm \dfrac{n!}{(n-3)!}\)
4
\(\rm \dfrac{n!}{6\times(n-3)!}\)