TI-83 Help Section Factorials

Factorials,Combinations and Permuatations on the TI-83
2-21 in the TI-83 Guidebook

The TI series calculator performs numerous probability operations.

Factorials

	Press $math.jpg (945 bytes)$ 4 .
	Enter the number you want to find the factorial. Then Press $math.jpg (945 bytes)$ 4 . You can also find the factorials of more than one number at a time. Try this... {3, 4, 5} $math.jpg (945 bytes)$ 4 . You should get {6, 24, 120} Press ( to get { key.
Permutations
	Press $math.jpg (945 bytes)$ 2 .
	Enter the first number. 52 Then Press $math.jpg (945 bytes)$ 2 . Then enter the second number. 5 Press You can also find permutations of more than one number at a time. Try this... {10, 7} $math.jpg (945 bytes)$ 2 gives {10, 5040} Press ( to get { key.
Combinations
	Press $math.jpg (945 bytes)$ 3 .
	Enter the first number. 52 Then Press $math.jpg (945 bytes)$ 3 . Then enter the second number. 5 Press You can also find permutations of more than one number at a time. Try this... {10, 7} $math.jpg (945 bytes)$ 3 gives {10, 1} Press ( to get { key.