Problem 160. So many choices

For inputs n and k (in that order), output the number of ways that k objects can be chosen from amongst n distinct objects. [The order of the selected objects is irrelevant.]

For example, suppose you have 4 blocks: red, green, blue, yellow. How many ways are there to select 2 of them? There are 6 ways: RG, RB, RY, GB, GY, BY. [Remember the ordering is irrelevant, so GR is equivalent to RG, and therefore does not count as a distinct choice.]

So, function(4,2) ---> 6.

Solve

Solution Stats

52.48% Correct | 47.52% Incorrect
Last Solution submitted on Oct 27, 2025

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers462

Suggested Problems

More from this Author23

Problem Tags

basic matlab basics choose

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!