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Combinations & Permutations Calculator

This add-in is an update to the original version that was posted in 2012. It works the same way but the Clear and Close buttons have been removed.


The add-in presents a window in which you enter the total number of items N and the number of items in a combination K. The starting values are N=4 and K=2 as seen here:


Screen Shot 2022-02-14 at 1.12.20 PM.png


You can change either N or K, and the result updates automatically. Here is the result of entering 5 for K:


Screen Shot 2022-02-14 at 1.12.44 PM.png


You can also request the number of permutations instead of the number of combinations with the radio button underneath the result:


Screen Shot 2022-02-14 at 1.12.54 PM.png