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nCr=n!/(r!(n-r)!)
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∙ 11y ago
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What is a general equation that expresses the relationship between permuation nPr and combination nCr?
nCr = nPr/r!
How do you find the coefficients of the terms in the binomial expansion?
The coefficient of x^r in the binomial expansion of (ax + b)^n isnCr * a^r * b^(n-r)where nCr = n!/[r!*(n-r)!]
How do you do combinations in math?
nCr=n!/r!/(n-r)!
How many ways can a coach select 5 players from a team of 10 players?
On some calculators there is an "NCR" button. Pressing the amount of total objects (in this case people), pressing "NCR", then pressing the amount of objects to be randomly taken would give us the total amount of combinations. In this case, 10 NCR 5= 252.........this isnt the right answer it is 28
Prove that nCr plus nCr minus 1 equals n plus 1Cr?
nCr + nCr-1 = n!/[r!(n-r)!] + n!/[(r-1)!(n-r+1)!] = n!/[(r-1)!(n-r)!]*{1/r + 1/n-r+1} = n!/[(r-1)!(n-r)!]*{[(n-r+1) + r]/[r*(n-r+1)]} = n!/[(r-1)!(n-r)!]*{(n+1)/r*(n-r+1)]} = (n+1)!/[r!(n+1-r)!] = n+1Cr
What is a general equation that expresses the relationship between permuation nPr and combination nCr?
nCr = nPr/r!
A committee of 4 people is to be formed from a group of 15 employees How many different committees are possible?
This is a combination problem; use the nCr formula. nCr = 15! / ((15-4)!*4!) nCr = 15! /(11!*4!) nCr = 1365
How do you find Combination on a TI-83 Plus?
Press MATH and select PRB at the top. The third option, nCr, is combination. Example: To find C(10,4) type: 10 nCr 4
Who is in charge of the ncr on fallout new vegas?
The NCR's overall leader is President Aaron Kimball. The military effort against the Legion, is General Lee Oliver.
What is the market cap for NCR Corporation NCR?
As of July 2014, the market cap for NCR Corporation (NCR) is $5,416,454,000.00.
What is the ticker symbol for NCR Corporation?
The ticker symbol for NCR Corporation is NCR and it is traded on the New York Stock Exchange.
Is dharuhera in NCR?
Dharuhera is in NCR
What are the products in NCR?
what are the products in NCR
What is the livelihood in NCR?
Livelihood in ncr
What is the general term of the expansion 1-x to the power n?
The r+1 th term is nCr(-x)r where r = 0, 1, 2, ... , n. and where nCr = n!/[r!*(n-r)!]
Is there a combination button on a TI-83 Plus?
Yes. For example, if you want to calculate combination(6,2), press 6 and then press MATH. Use the arrow keys to scroll over to PRB at the top and select nCr. Then press 2. You should see: 6 nCr 2 Press ENTER.
What is on the NCR flag?
look up NCR on Google images
