Question about Texas Instruments TI-30X-IISTK Scientific Calculator

1 Answer

What key do you use when calculating factorials? In my math book it shows 9 x! or 9!. I cannot find this key on my TI calculator.(!)

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Texas Instru... Master
  • 7,993 Answers

The prb key displays two menus PRB and RAND. The factorial is the third option under the PRB menu.
4 PRB 3 displays 4! which is 24.
Hope it helps.

Posted on Oct 04, 2009

  • k24674 Oct 04, 2009

    Sorry, answer is valid for the Multiview, not for TI-30X II. It has the permutations (nPr) and the combinations (nCr) but no factorial function.

  • k24674 Oct 06, 2009

    Sorry again (must be my day). The answer given initially is correct. The prb key displays nPr, nCr, the factorial function !, RAND and RANDI



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

How would i key in 8! to see answer?

Here you go, Ray Ray...

In order to calculate the factorial of a number you must do the following:

1. Type your number [8]
2. Hit MATH
3. Scroll to PRB
4. Hit ENTER [The factorial symbol should be either the 1st one on that list or the 4th one]

Longstoryshort, if you want to find the factorial symbol on your TI-83 you must go to MATH. PRB. !. Done

By the way...that factorial is the fastest growing type of function in mathematics, and it is the backbone behind permutation, combinations, and a lot of probability theory.

Have Fun,

The Math Cheetah

Mar 13, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

How would I key in 8! in my TI-83 plus cal. thank you Raymond

8. MATH. PRB. !.

That is how you get the factorial of a number.

The factorial is beneath the PRB list, which is inside the MATH menu.


The Math Cheetah

Mar 13, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

Where is the factorial key or button

There isnt such a key. Press MATH to bring up the Math menu, press left-arrow to select PRB, then press 4 to select factorial.

Sep 23, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

I cannot figure out how to solve factorials on my TI-83 Plus.

Enter the number whose factorial you want to calculate.
Press the [MATH] key under the [ALPHA]key.
Press the Right arrow 3 times to highlight the [PROB] menu.
Select option [4:!]
Press [ENTER

Note : Due to memory limitation, the argument of the factorial function must at most be equal to 69

Jul 15, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

How do u do fractions

Enter the numerator then the division key and the denominator. Before pressing [ENTER], press [MATH][1:=>Frac] [ENTER]. The fraction will be displayed reduced.
27/48 [MATH][1:=>Frac] ENTER] yields 9/16

Dec 08, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

Where is fraction key on the ti-83 plus

There is no key per se but a command accessible as follows
[MATH][1:->Frac] the fractions given are always reduced/

27/48 [MATH][1:->Frac][ENTER] gives 9/16

0.25 [MATH][1:->Frac] [ENTER] gives 1/4
Hope it helps

Oct 08, 2009 | Texas Instruments TI-83 Plus Calculator

2 Answers

How do i do "regular" math, calculator stuck on GRAD/DRG...

Pressing the DRG key toggles through using degrees, radians, grads

Instruction booklet page 9 explains...

Aug 07, 2008 | Texas Instruments TI-30XA Calculator

Not finding what you are looking for?
Texas Instruments TI-30X-IISTK Scientific Calculator Logo

Related Topics:

806 people viewed this question

Ask a Question

Usually answered in minutes!

Top Texas Instruments Office Equipment & Supplies Experts


Level 3 Expert

102366 Answers


Level 3 Expert

7993 Answers

Stevan Milanovic

Level 2 Expert

262 Answers

Are you a Texas Instruments Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides