Find the factorial of a number on a scientific calculator, enter the number and press the “x!” key. This may require you to press “shift,” “2nd” or “alpha” first depending on your model of calculator and the location of the symbol. Press “=” to get the result.

How do you do an exclamation point on a TI 89?

The symbol for factorial is the exclamation point. So 4! (pronounced four factorial) is You will learn more about applications of factorials in your textbook, but for now use the TI-89 to calculate 4! Press the keystrokes: 4 2nd MATH 7 [Probability] ENTER ENTER.

What is a permutation vs combination?

A permutation is an act of arranging the objects or numbers in order. Combinations are the way of selecting the objects or numbers from a group of objects or collection, in such a way that the order of the objects does not matter.

How do you find the binomial coefficient on a TI 89?

Step 1: Press the APPS key and scroll (using the scrolling arrows) to choose Stats/List Editor. Press ENTER. Step 2: Press the F5 key. Scroll down to B: Binomial Pdf.