Question about Sentry CA 756 Calculator

# How do you use permutation (nPr) on sentry CA756?

I need to know if there is a "npr" button on the calculator because we are doing permutations in math class right now and i cannot find it.

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No, but you can write a simple program using the built-in factorial function.

Posted on Aug 18, 2010

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Posted on Jan 02, 2017

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## Related Questions:

### Where is thecombination and permutation button

Combination are calculated using the nCr key. For Permutations use the nPr key.

Jun 11, 2014 | Casio Fx-83gtplus Scientific Calculator

### Permutations

Use nPr, which is the shifted function of the multiply key. For example, to find the number of permutations of six items taken three at a time, press 6 SHIFT nPr 3 =

Oct 29, 2013 | Casio FX991ES Scientific Calculator

### How do I find the permutations button on a Casio Computer FX-CG10 Graphing Calculator

Turn calculator ON.
If you see no icons, press the Menu key then [1] to select Run/Mat.
In Run/Mat press the OPTN key, then the F6 key to pan other tabs.
Above the F3 key you see the PROB tab. Activate it by pressing F3. The permutation Tab is above F2.
To use permutations, enter the larger number (n), press F2 [nPr] followed by the smaller number.

Jan 31, 2013 | Casio Computer FX-CG10 Graphing Calculator

### HOW DO YOU DO PERMINTATIONS ON FX-115ES

The permutations function (nPr) is the shifted function of the multiply key.

For example, to find the number of permutations of 10 items taken 4 at a time, press
1 0 SHIFT [nPr] 4 =

Oct 31, 2010 | Casio FX-115ES Scientific Calculator

### I'm trying to learn Permutations and Combinations in my Algebra class and it gives us generic formulas like nPr=n!over(n-r)! and nCr=n!overr!(n-r)! and I was wondering how I'm supposed to do those. I was...

Yes, your calculator can do them. Press the PRB key to bring up the Probability menu. Among them you'll find nPr and nCr for permutations and combinations, as well as ! for the factorial.

To compute 4C2, press 4 PRB right-arrow 2 ENTER. Permutations work the same way, only without the right-arrow.

Apr 23, 2010 | Texas Instruments TI-34II Explorer Plus...

### 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...

### How do I do a permutation? (npr)

Hello,
The syntax is not as you thought.
Ex: 8(nPr)3 is entered as follows
8 [X <--> Y] 3 [2nd] [nPr] [=]

The [ X <--> Y] is the exchange X and Y key.

Hope it helps.

Oct 17, 2009 | Texas Instruments TI-36 X Solar Calculator

### NPr and nCr key

Hello,
On calculators you calculate permutations and combinations as follows
Enter the number n then press key nPr, and the number r
18(nPr)5=1028160

For combinations, use nCr key instead of nPr.
18(nCr)5=8568.

Hope it helps

Apr 24, 2009 | Texas Instruments BA-II Plus Calculator

### I want to calculate permutation and combination.

Hello,
Use the sequence [2ndF][nPr] for permutations and [2ndF][nCr] for combinations.
Exemples: 10(nPr)3 is entered as 10[2ndF][nPr]3 [=] gives 720
5(nCr)2 is entered as 5 [2ndF][nCr] 2 [=] gives 10

Hope it helps.

Apr 09, 2009 | Sharp EL-531VB Calculator

### Combinations and Permutations

You can enter combinations and permutations.

If the order of the selection matters (ie. 1st, 2nd, and 3rd place out of 40 contestants) use permutation. Enter:

IF order doesn not matter (ie. a team of 3 from 40 possible members) then it is a combination. Do the same as above, but substitute {nCr} for {nPr}. (= 9880 possible ways).

For your question: a three-digit set, selecting from 0-9. There is no specified order, it is a combination. The total n=10 (there are 10 digits in the range 0-9) and you are selecting 3.

so.... 10[nCr]3 with give the number of possible combinations.

Feb 16, 2009 | Casio FX-115ES Scientific Calculator

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