http://www.ck12.org Chapter 2. Conditional Probability
2.3 Permutation Problems
Here you’ll learn how to use a Texas Instrument calculator to solve permutation problems.
Suppose you want to select items to place on your shelf at home from left to right. If you have 45 items from which
to select how many possible arrangements can you make? Can you see why a calculator might be useful to find this
answer?
Watch This
First watch this video to learn about calculating permutations with calculators.
MEDIA
Click image to the left for more content.CK-12 Foundation: Chapter2PermutationProblemsA
Then watch this video to see some examples.
MEDIA
Click image to the left for more content.CK-12 Foundation: Chapter2PermutationProblemsB
Guidance
To calculate permutations (nPr) on the TI calculator, first enter thenvalue, and then press
MATH. You should see menus across the top of the screen. You want the fourth menu: PRB (arrow right 3 times). The
PRB menu should appear as follows: