Question

Tell what you would compute in npr or nCr form, whichever is appropriate to the situation (.e., does order matter or not?), but do not compute it. For example, for the number of ways 5 letters could b

Answer 1

What does the dog say?

Explanation:
I'm assuming by npr and ncr you mean the calculation for probability with permutation or combination. Let's look at the formulas.
Permutation: n! / ( n - r )!

Combination: n! / r! ( n - r )!
By logic, clearly, permutation has more possibilities than combination. But why? The combination is used to simulate a situation where order matters. For example lining up baseball players, where the order matters. Putting the best batter first is bad because if he gets a home run only he profits from it. The permutation is used to simulate a situation where order does not matter, for example, the permutation of balls you can put in a package, where either way, the person who receives it will get the same set of balls, no matter what order you put them in.
Hope this helped :D