Question about Texas Instruments TI-34II Explorer Plus Calculator

Hello,

Look for a key **nCr**. To calculate the combinations of 5 objets chosen 4 at time

5[nCr] 4 [=] gives 5

For permutations look for a key **[nPr].**

Hope it helps .

Posted on Sep 14, 2009

I can't find it but you can do this:

nCk = (n choose k) = n! / k! / (n-k)!

I don't think there is any other way on this calculator.

Rate me, thanks.

Posted on Jul 08, 2009

Factorial Calculator "A factorial is a function that multiplies a number by every number below it. For example 5!= 5*4*3*2*1=120. The function is used, among other things, to find the number of way "N" objects can be arranged."

Oct 13, 2015 | Casio FX-9750GII Graphing Calculator

The calculator's memory is limited. **The largest number it can handle is about 10^100 and that is a bit more then 69! **

It you are trying to calculate the permutation and/or combinations, which involve the ratios of factorials nPr=n!/(n-r)! and nCr= n!/((n-r)!r!) you will have better luck using the relevant commands directly and not use the above divisions.

When you are calculating ratios by hand (why would you do that? you might ask) there is a simple trick you can take advantage of. It involves expanding the factorial in the numerator as in the following example:

Calculate 7!/4!=7*6*5*4!/4!=7*6*5=210.

It you are trying to calculate the permutation and/or combinations, which involve the ratios of factorials nPr=n!/(n-r)! and nCr= n!/((n-r)!r!) you will have better luck using the relevant commands directly and not use the above divisions.

When you are calculating ratios by hand (why would you do that? you might ask) there is a simple trick you can take advantage of. It involves expanding the factorial in the numerator as in the following example:

Calculate 7!/4!=7*6*5*4!/4!=7*6*5=210.

Aug 02, 2011 | Texas Instruments TI-84 Plus Calculator

Your calculator has three keys, next to which are the following markings:n! , nCr, and nPr. The one with the exclamation point is for factorials. The second is for combinations, and the third with permutations.

Syntax of the command.

If the markings are on the keys, the functions are accessed directly. If the markings are on the body of the calculator, you access the functions by pressing SHIFT and the key.

12 [!] gives 12 factorial

12 [nCr] 4 gives the combinations of 12 objects taken 4 at a time (order not important)

12 [nPr] 4 gives the permutations of 12 objects taken 4 at a time (order is important.)

Syntax of the command.

If the markings are on the keys, the functions are accessed directly. If the markings are on the body of the calculator, you access the functions by pressing SHIFT and the key.

12 [!] gives 12 factorial

12 [nCr] 4 gives the combinations of 12 objects taken 4 at a time (order not important)

12 [nPr] 4 gives the permutations of 12 objects taken 4 at a time (order is important.)

Jun 09, 2011 | Texas Instruments TI-30XA Calculator

You may be writing the expression as they appear in the formula, but the problem stems from the fact the factorial function increase rather rapidly and you cannot calculate the factorials of numbers larger that 69 which is the limit of the calculator.

However if you use the built in Combination function nCr, you will avoid the problem. In the binomial function, the n!/(r!(n-r)!) factor can be replaced by nCr or nC(n-r).

Do not use the explicit form with the factorials because you will get an overflow.

However if you use the built in Combination function nCr, you will avoid the problem. In the binomial function, the n!/(r!(n-r)!) factor can be replaced by nCr or nC(n-r).

Do not use the explicit form with the factorials because you will get an overflow.

Nov 09, 2010 | Casio FX-115ES Scientific Calculator

There is no button but a menu tab.

In Run screen, enter the number whose factorial you want to calculate ( number can be at most equal to 69), press [OPTN][F6] to get to next page of menus.

For factorials

In Run screen, enter the number whose factorial you want to calculate ( number can be at most equal to 69), press [OPTN][F6] to get to next page of menus.

For factorials

- Press then [F3](PROB) then [F1] (x!) followed by [EXE].

- Press then [F3](PROB) then[F3][nCr][EXE]

- Press then [F3](PROB) then[F2][nPr][EXE]

Oct 01, 2010 | Casio FX-9750GPlus Calculator

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

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

It all depends on what calculator you have.

For the TI-89, Press 2ND, then press 5, then press 7, then press enter.

The the TI-84, Press 2ND, then press 0, then press 3, then press enter.

I do not believe the TI-30 can do factorials.

For the TI-89, Press 2ND, then press 5, then press 7, then press enter.

The the TI-84, Press 2ND, then press 0, then press 3, then press enter.

I do not believe the TI-30 can do factorials.

Oct 27, 2009 | Texas Instruments Calculators

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.

The

4 PRB 3 displays 4! which is 24.

Hope it helps.

Oct 04, 2009 | Texas Instruments TI-30X-IISTK Scientific...

Hello,

There is nothing to fix, the calculator calculates factorials up to 69! Beyond that it cannot. The largest number it can handle is 1E100.

Hope it helps.

There is nothing to fix, the calculator calculates factorials up to 69! Beyond that it cannot. The largest number it can handle is 1E100.

Hope it helps.

Sep 26, 2009 | Texas Instruments TI-83 Plus Calculator

Easy 10! / 4! / 18! don't multiply only divide.

Rate me, thanks.

Rate me, thanks.

Jan 24, 2009 | Texas Instruments TI-34II Explorer Plus...

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Finding Factorials

I need to know how the do factorials too! There is a button with FAC but when I push it, it doesn't do anything. How does it work?!

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