Solution 15300: Calculating Factorials on the TI-85 and TI-86 Graphing Calculators.
How do I calculate factorials on a TI-85 or TI-86 graphing calculator?
The procedure below will demonstrate how to calculate factorials on a TI-85 or TI-86 graphing calculator. Example: Compute 5!
• Enter 5 and press [2nd] [F2]. • Press [F1] and [ENTER] for the result.
The screen should display 120.
Please see the TI-85 and TI-86 guidebooks for additional information.
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