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you use nPr, when you want to take note of the order.
Example, in choosing between A,B,C,D & E , how many ways can you choose any 3 arranged letters. (This means ABC is different from ACB or BCA or...)
Then 5P3.
you use nCr , when the order is not important.
Example , how many ways can you get three letters from A,B,C,D & E. (here ABC is no different from BAC since you just got A&B&C.)
Then 5C3.
I got this from Yahoo answers :P
What else can I help you with?
What is a general equation that expresses the relationship between permuation nPr and combination nCr?
nCr = nPr/r!
What is the difference between Isuzu npr and isuzu npr-hd?
Isuzu NPR is bigger then Isuzu NKR, they are more expensive.
What is the difference between NCR and CAR in quality?
NCR-Non Conformance Report; CAR: Corrective Action Request
What difference between NPR and KPCC?
NPR is a news organization that produces radio programming nationwide. KPCC is a local radio station in Southern California. They produce lcal programming, and also deliver programming produced by many news organizations including APM, BBC, NPR, and PRI.
How do you write a combination and permutation formula?
The combination formula is usually written as nCr representing the number of combinations of r objects at a time taken from n. nCr = n!/[r!*(n-r)!] The permutation formula is usually written as nPr representing the number of permutations of r objects at a time taken from n. nPr = n!/r! Where n! [n factorial] is 1*2*3*....*(n-1)*n
What are the 6 combination numbers there in 55 numbers?
I am not stupid enough to try and list them since there are 55*54*53*52*51*50/(6*5*4*3*2*1) = 28,989,675 combinations. nPr=permutation while nCr=combination. The question is how many combination of 6 are there in 55 numbers. So the answer should be based on the formula: nPr = n!/(n-r)! where ! is factorial and nCr = nPr/r! = n!/{(n-r)*r!} ; So using the formula should look likr this 55C6 = 55!/{(55-6)!*6!} = 55!/(49!*6!) = 28,989,675
Where is the NCR key on a ti-83 plus?
Press MATH and use the left or right arrow key to select PRB at the top. NCR will be the third option. This goes in between the two numbers, for example: 8 nCr 5
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.
What is the motto of NPR?
The motto of Public Radio International is 'Hear a different voice'.
What is nPr in math?
nPr in math stands for permutation :)
Is dharuhera in NCR?
Dharuhera is in NCR
