Mathmatics (2 Viewers)

[Loppan]

I have a mathmatics problem:

There is six players who is gonna play against each other. That means 15 matches. The result is either win or loose. What is the possibility that one player win all his/her matches?

The answer is about 63% but I don't know how to get there.

 

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[Tom]

I have no idea how it could possibly be 63%..assuming the prob of someone winning a match is 0.5

how are the probabilities distributed?

 

[hoshi]

i think it would be done using the 'choose' function (at least, that's what it's called on my graphics calc)

 

[Tom]

mine doesn't have that function..useless casio trash

 

[#10]

tom, my casio has the choose function.....its the button nCr. that reminds me, i shud be doin sum stats revision:fero:

 

[#10]

i SHUD be able to do this question.....is it for maths Statistics loppan????

 

[#10]

got it...haha

 

[#10]

here is my workin:

15C6*(0.5*1)*(0.5*5)...divide by 100 = 62.56...or 63%

 

[#10]

am i write guys??? loppan is that whot u needed?

 

[Tom]

John I got up to that point but forgot to divide by 100 :groan:

the nCr button, yep I fot that one, didn't know its name

 

[Loppan]

++ [ originally posted by John #10 ] ++
here is my workin:

15C6*(0.5*1)*(0.5*5)...divide by 100 = 62.56...or 63%

Thanks but what do C means???

 

[hoshi]

C refers to the nCr button on the calculator

i loved stats when i did it in high school but i've forgotten it all now

 

[Loppan]

++ [ originally posted by hoshi ] ++
C refers to the nCr button on the calculator

i loved stats when i did it in high school but i've forgotten it all now

Ok, but what does it stand for like ^ . I have a graph calc but I couldn't find the button.

 

[Loppan]

Can you explain the solution a bít more?

 

[#10]

ah...the C button basically stand for choose.

i dont think it stands for the choose function. Not sure on a graphical calculator, but i could find out for u.

 

[Majed]

u guys depend too much on the calculator!

 

[Martin]

:LOL:

 

[Layce Erayce]

OMG abacuses are the coolest! Eh majed

 

[#10]

hey, id hate to have to do the stats wiv out the calculator...could do it, but weve been specifically tought how to use the calculator....besides u cant write 22318008 on ur abacus!!

 

[Roverbhoy]

Good grief. Juventuz.com has it's own Burbaki masterclass