Education Technology

# Knowledge Base

## Solution 34718: Calculating Permutations and Combinations Using the TI-84 Plus C Silver Edition Calculator.

### How do I calculate permutations and combinations using the TI-84 Plus C Silver Edition Calculator?

The examples below will demonstrate how to calculate permutations and combinations using the TI-84 Plus C Silver Edition.

Example: How many possible permutations of 2 cards can be chosen from a deck of 5 cards?

• Input 5.
• Press [MATH], arrow right to highlight PRB, then press [2] to select the nPr function.

• Input 2 and press [ENTER]. There are 20 possible permutations of choosing 2 cards from a deck of 5 cards.

Example: How many possible combinations of 2 cards can be chosen from a deck of 5 cards?

• Input 5.
• Press [MATH], arrow left to highlight PRB, then press [3] to select the nCr function.

• Input 2 and press [ENTER]. There are 10 possible combinations of choosing 2 cards from a deck of 5 cards.

Please see the TI-84 Plus C Silver Edition guidebook for additional information.