Calculator Activity
PROBABILITY
OBJECTIVE: To get a basic understanding factorials, combinations, and permutations.
A combination is used when order does not matter. A permutation is used when order does matter.
1. Find 10!.
STEP 1: Enter 10!by pressing 
.
STEP 2: Calculate by pressing 
.
2. How many different ways can you choose 1 from a group of 6?
STEP 1: Enter the larger number, 6, by pressing 
.
STEP 2: Enter the combination symbol by pressing 
.
STEP 3: Enter the smaller number, 1, by pressing 
.
STEP 4: Calculate the answer by pressing 
.
3. Find the number of permutations of 4 things taken 2 at a time.
STEP 1: Enter the larger number, 4, by pressing 
.
STEP 2: Enter the permutation symbol by pressing 
.
STEP 3: Enter the smaller number, 2, by pressing 
.
STEP 4: Calculate the answer by pressing 
.
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