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

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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.(!)

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Hello,
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

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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.

Adios,


The Math Cheetah
411@themathcheetah.com

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


Hello,
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...

http://education.ti.com/educationportal/downloadcenter/SoftwareList.do?website=US&tabId=2&paneId=18#27

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

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