Exploring Factorials, Permutations, and Combinations with TI-83/84

How do you access the prob menu on the TI 83/84 Plus calculator?

• Hold the alpha key and press the math key

• Press the math key and then the right arrow key three times

• Press the 2nd key followed by the math key

• Press the mode button twice

Which key is initially pressed to start any calculation for factorials, permutations, or combinations?

• The math key

• The ON key

• The 2nd key

• The alpha key

What is the result of calculating 3 factorial on the TI 83/84 Plus?

• 9

• 18

• 6

• 3

How is the factorial function selected on the calculator?

• By pressing the number 4

• By pressing the down arrow key until ! is highlighted

• By typing the factorial symbol directly

• Both A and B are correct

What is the purpose of pressing ENTER twice after selecting the factorial function?

• To exit the menu

• To display the result

• To reset the calculator

• To confirm the selection

Which menu item is selected for calculating permutations?

• !

• nPr

• x^y

• nCr

What is the result of selecting 3 items from a total of 10 using permutations?

• 720

• 30

• 100

• 120

What indicates that the calculator is ready for the next input when calculating permutations or combinations?

• A message saying 'Ready'

• A small blinking box

• The screen turns off and on

• A beeping sound

For combinations, after selecting the total number of items, what is the next step?

• Press the math key and select nPr

• Enter the number of items being selected and press Enter

• Highlight PRB in the top menu and select nCr

• Press the alpha key followed by the number of items

What is the result of selecting 3 items from a total of 10 using combinations?

• 100

• 120

• 30

• 720