Question about Texas Instruments TI-36 X Solar Calculator

# I'm trying to figure out my nCr button. If I type in 7 as my n, and 4 as my r I just get zero!

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Press 7 x<>y 4 3rd [nCr]

Posted on Sep 01, 2013

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Posted on Jan 02, 2017

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## Related Questions:

### 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 use binomial in calculator

The binomial probability distribution is defined as
P(r;p;n) =(nCr)(p^r)*(1-p)^(n-r), where n is the number of trials, p the probability of success, and r the expected result.

Let n=20, r=7, p=0.15 ( I do not know wether this exemple has any meaning in the context of your problem, but you have to enter values that mean something to you.) I am only showing you the key strokes

To enter 20C7 you press 20 [SHIFT][nCr]7 ;
To enter 0.15 to the power 7 you type 0.15[X to ] 7 the key is between
[x²] and [log]

To enter (1-0.15) to power 20-7, you type 0.85 [X to] 13
With [*] standing for multiplication key , and [X to] the raise to power key, the exemple above can be entered as

( 20 [SHIFT][nCr] 7) [*] ( 0.15 [X to] 7 ) [*] ( 0.85 [X to] 13 ) [=]

Here is a screen capture to show you what it looks like. However on this calculator the combination 20 [SHIFT][nCr] 7 is represented as nCr(20,7).

Dec 06, 2009 | Casio FX-115ES Scientific Calculator

### Binomial function

Hello,

The binomial probability distribution is defined as
P(r;p;n) =(nCr)(p^r)*(1-p)^(n-r)
where n is the number of trials, p the probability of success, and r the expected result.

Let n=20, r=7, p=0.15 ( I do not know wether this exemple has any meaning in the context of your problem, but you have to enter values that mean something to you. I am only showing you the key strokes

To enter 20C7 you press 20 [SHIFT][nCr]7 ;
To enter 0.15 to the power 7 you type 0.15[X to ] 7 the key is between
[x²] and [log]

To enter (1-0.15) to power 20-7, you type 0.85 [X to] 13
With [*] standing for multiplication key , and [X to] the raise to power key, the exemple above can be entered as

( 20 [SHIFT][nCr] 7) [*] ( 0.15 [X to] 7 ) [*] ( 0.85 [X to] 13 ) [=]

Here is a screen capture to show you what it looks like. However on this calculator the combination 20 [SHIFT][nCr] 7 is represented as nCr(20,7).

Hope it helps

Nov 12, 2009 | Casio FX-115ES Scientific Calculator

### Binomial function in calculator fx-911ES

Hello,

The binomial probability distribution is defined as
P(r;p;n) =(nCr)(p^r)*(1-p)^(n-r)
where n is the number of trials, p the probability of success, and r the expected result.

Let n=20, r=7, p=0.15 ( I do not know wether this exemple has any meaning in the context of your problem, but you have to enter values that mean something to you. I am only showing you the key strokes

To enter 20C7 you press 20 [SHIFT][nCr]7 ;
To enter 0.15 to the power 7 you type 0.15[X to ] 7 the key is between
[x²] and [log]

To enter (1-0.15) to power 20-7, you type 0.85 [X to] 13
With [*] standing for multiplication key , and [X to] the raise to power key, the exemple above can be entered as

( 20 [SHIFT][nCr] 7) [*] ( 0.15 [X to] 7 ) [*] ( 0.85 [X to] 13 ) [=]

Here is a screen capture to show you what it looks like. However on this calculator the combination 20 [SHIFT][nCr] 7 is represented as nCr(20,7).

Hope it helps

Nov 03, 2009 | Casio FX-115ES Scientific Calculator

### I need to change an NCR 7875 - 2000 from lbs to kg Regards Peterm

You will have to print out the Scan Tags which start at page 281 and you will also need the correct weights; 0kg, 2.5kg, 5kg and 10kg.

Then follow these steps and be sure to scan tags in correct order:

1. Reset
2. Default
3. Program mode
4. Hex 3
5. Hex 0
6. Hex 1
7. Push the calibrate button under weighing tray
8. Place the correct weights in order. It will ask for the weights in order.
9. Calibration complete

Jun 05, 2009 | NCR 7875

### Wheelwriter 6 will not print dark on 4 page NCR paper.

First try a new IBM brand ribbon part # ends in 999. NCR paper can be difficult try the code "Q" this should increase thr impression.

DickyO

Mar 16, 2009 | IBM Office Equipment & Supplies

### Printer does not respond, and we restarted it and it still does the same thing

Whats the brand and make of the printer and are there any error lights being displayed ?

also try this solution it may solve your problem:

Click start > click run

in the Run window type cmd

hit enter

now a black DOS window will appear

now type

net stop spooler

wait 10 seconds

now type

net start spooler

it should look like this :

Microsoft Windows XP [Version 5.1.2600]

C:\Documents and Settings\NCR>net spool stop
The syntax of this command is:

NET [ ACCOUNTS | COMPUTER | CONFIG | CONTINUE | FILE | GROUP | HELP |
HELPMSG | LOCALGROUP | NAME | PAUSE | PRINT | SEND | SESSION |
SHARE | START | STATISTICS | STOP | TIME | USE | USER | VIEW ]

C:\Documents and Settings\NCR>print spool stop
Can't find file spool
Can't find file stop

C:\Documents and Settings\NCR>net print spool stop
The syntax of this command is:

NET PRINT
\\computername\sharename
[\\computername] job# [/HOLD | /RELEASE | /DELETE]

C:\Documents and Settings\NCR>net stop spooler

The Print Spooler service was stopped successfully.

C:\Documents and Settings\NCR>net start spooler
The Print Spooler service is starting.
The Print Spooler service was started successfully.

Thanks

Aug 18, 2008 | Office Equipment & Supplies

### Error 5 for ncr 7875 scale scanner

Hello,
If the scanner read only two times is a problem with the communication protocol.

What protocol do you use?

Jul 29, 2008 | NCR 7875

I contacted NRC and this is the answer they gave me.

Please access the templates from the website listed below. If you need additional assistance, please contact our customer service center at 800-279-0203, ext 1 for product support. thank you
http://www.ncr.com/products/supplies/sup_rop_printer_labels_inst_product.htm NCR

Apr 11, 2008 | Office Equipment & Supplies

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