Education Technology

Solution 15789: Calculating Combinations and Permutations on the TI-30Xa and TI-30Xa Solar.

How do I calculate combinations and permutations on the TI-30Xa and TI-30Xa Solar?

The example below will demonstrate how to calculate combinations and permutations on the TI-30Xa and TI-30Xa Solar:


Example:


What are the combinations of 6 choosing 2?


Combination Solution:

1) Press [6] [2nd][8] (for nCr) [2][ENTER].

 

The solution will be shown as 15.

 

Permutation Solution:

1) Press [6] [2nd][9] (for nPr) [2][ENTER].


The solution will be shown as 30.


Please see the TI-30Xa family guidebooks for additional information.