Question about Texas Instruments TI-30 Xa Solar Calculator

# TI-30x How do I use the nCr function? - Texas Instruments TI-30 Xa Solar Calculator

Posted by on

• Level 3:

An expert who has achieved level 3 by getting 1000 points

One Above All:

The expert with highest point at the last day of the past 12 weeks.

Top Expert:

An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

Superstar:

An expert that gotÂ 20 achievements.

• Texas Instru... Master

Input n, press 2nd [nCr], input r, press =.

For example, to calculate the number of thirteen-card bridge hands that can be dealt from a deck of 52 cards:
5 2 2nd [nCr] 1 3 =

Posted on Sep 15, 2010

## 4 Suggested Answers

Hi,
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.
Goodluck!

Posted on Jan 02, 2017

If you have an older version on the TI30x Solar (not TI30Xa or newer) then you must use a different key sequence for nPr/nCr.

52 [2nd][x/y] 5 [2nd][nCr] gives 2598960 (the x/y button is above the Pi symbol on my version).
8 [2nd][x/y] 3 [2nd][nPr] gives 336

This took me forever to find out, so hopefully it will help someone!

Posted on Jun 28, 2010

Enter the value n. Press 2ND then nCr. Enter the value r. Press the = key.

Posted on May 20, 2010

Enter the value n. Press 2ND then nCr. Enter the value r. Press the = key.

You can download a Guidebook from http://education.ti.com

Posted on May 20, 2010

×

my-video-file.mp4

Complete. Click "Add" to insert your video.

×

## Related Questions:

### What does deg in display on ti-30x mean

It means the calculator is current set to the degrees mode. Trigonometric function depend on how you measure the angle. The most common units are degrees, radians, and grads. To change the mode on the 30Xa, press the DRG key to cycle through them.

Jun 12, 2014 | Texas Instruments TI-30X-IISTK Scientific...

### Finding normalcdf function on TI-30x

Sorry, the TI-30x doesn't have the cumulative normal probability function built-in.

Feb 02, 2012 | Texas Instruments TI-30XA Calculator

### How do I use ncr function?

To calculate the number of combinations of n items taken r at a time, enter n, press x-y, enter r, then press 3rd [nCr] =. For example, to find the number of possible five-card poker hands, press
5 2 x-y 5 3rd [nCr] =

x-y is the x-exchange-y key just below the blue 2nd key.

May 20, 2010 | Texas Instruments TI-36X Scientific...

### How do you enter a combination on the TI 30X. nCr?

Enter the value n. Press 2ND then nCr. Enter the value r. Press the = key.

May 20, 2010 | Texas Instruments TI-30XA Calculator

### How do I enter a combination of (10,4) on a TI=30X

Enter the value n. Press 2ND then nCr. Enter the value r. Press the = key.

You can download a Guidebook from http://education.ti.com

May 20, 2010 | Texas Instruments TI-30XA Calculator

### Can you calculate nCr ?

Yes. Use the 2nd [nCr] function.

52 2nd [nCr] 5 = will calculate the number of 5-card poker hands that can be dealt from a deck of 52 cards.

Apr 06, 2010 | Texas Instruments TI-30XA Calculator

### A Committee has 19 members, of which 10 are Democrats and 9 are Republicans. A subcommittee is going to be formed with 3 Democrats and 3 Republicans. How many possible subcommittees can be formed?

How many ways can you select 3 members out of 9 republicans: nCr (9,3)
How many ways can you select 3 members out of 10 democrats: nCr(10,3)
For each single choice of 3 reps you have 1*nCr(10,3) possible subcommittees.
Hence the total number of possible suncommittes is nCr(9,3)*nCr(10,3)
Explictitly
# of possible subcommittees is [9!/(3!*6!)]*[10!/(3!*7!)] or 10080

To calculate you can use the explict formula above or use the nCr function of your calculator

To access the nCr( function press [2nd][5] (MATH) [7:Probability][3:nCr]

You can also just type the name of the command respecting the case ( C must be upper case)

Jan 31, 2010 | Texas Instruments TI-89 Calculator

### How to do nPr or nCr on TI-30x Solar (scientific calc.)

If you have an older version on the TI30x Solar (not TI30Xa or newer) then you must use a different key sequence for nPr/nCr.

52 [2nd][x/y] 5 [2nd][nCr] gives 2598960 (the x/y button is above the Pi symbol on my version).
8 [2nd][x/y] 3 [2nd][nPr] gives 336

This took me forever to find out, so hopefully it will help someone!

Jan 27, 2010 | Texas Instruments TI-84 Plus Silver...

### Combinations graph

you need to follow your user guide for calculaing nCr function

Nov 14, 2009 | Texas Instruments TI-84 Plus Calculator

## Open Questions:

#### Related Topics:

3,059 people viewed this question

## Ask a Question

Usually answered in minutes!

Level 3 Expert

Level 2 Expert