I was wondering if anyone would tell me how to calculate an event in a combination problem. For example, how would you calculate 4 choose 2?
Is it a simple calculator function, or is it something more complex?
If anyone can help, that would be awesome!!!
Thanks
2007-10-12 12:42:42 · 6 answers · asked by ? 3 in Science & Mathematics ➔ Mathematics
Without knowing your calculator model, it is hard to say.
Most calculators won't have a dedicated function for finding the number of combinations of choosing r items out of n items ("n choose r").
The general formula for "n choose r", or C(n, r) is:
n! / (r! (n - r)!)
"!" is the factorial function, which your calculator more likely has.
2007-10-12 12:48:17 · answer #1 · answered by Quocamus 2 · 2⤊ 1⤋
Choose Calculator
2016-12-17 14:51:29 · answer #2 · answered by Anonymous · 0⤊ 0⤋
This Site Might Help You.
RE:
I feel stupid!! (simple calculator function?)?
I was wondering if anyone would tell me how to calculate an event in a combination problem. For example, how would you calculate 4 choose 2?
Is it a simple calculator function, or is it something more complex?
If anyone can help, that would be awesome!!!
Thanks
2015-08-10 13:10:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋
N Choose K Calculator
2016-10-01 06:18:01 · answer #4 · answered by ? 4 · 0⤊ 0⤋
If your calculator has nCk or nPk buttons it is simple. If not you can use the following formula:
n choose k = n! / k! (n-k)!
Even better you can go to Google and type "4 choose 2" and it will give you the answer faster than your calculator.
2007-10-12 12:45:36 · answer #5 · answered by Puzzling 7 · 3⤊ 0⤋
Combination formula: 4!/[(2!)(2!)] = 4*3*2!/[2!*2!] = 12/2 = 6
good luck!
2007-10-12 12:47:04 · answer #6 · answered by alrivera_1 4 · 2⤊ 0⤋
If an exponent is in the denominator, it has the negative value of what it would be in the numerator. therefore 9.2*10^-3 / 6.3*10^6 is the same as 9.2*10^(-3-6) / 6.3 which can be simplified to 9.2*10^-9 / 6.3 This is also the same as (9.2/6.3) * 10^-9 so your answer is 1.5 * 10^-9.
2016-03-15 01:57:28 · answer #7 · answered by ? 4 · 0⤊ 0⤋