# Game of KENO ?

1. Oct 3, 2011

### sam_0017

game of KENO ???

can any one help whit this question ?

[PLAIN]http://up.arab-x.com/Oct11/doY59204.png [Broken]

E(n) = Ʃ p(n) × a(n)
" represent the probability you get i matches as P(i), the amount you win for i
matches as A(i) and the expected value for n numbers picked as E(n)."

Last edited by a moderator: May 5, 2017
2. Oct 22, 2011

### vrmuth

Re: game of KENO ???

E(40)? what's a(20) , a(21), etc. ? also i think the question is not complete , given data is not sufficient (for eg. with what (and how many ) numbers the chosen numbers are matched )

Last edited: Oct 22, 2011
3. Oct 23, 2011

### dynamicsolo

Re: game of KENO ???

I'm assuming for the moment that you know how to calculate the probabilities for the numbers of matches. I suspect what the author is calling "E(40)" is the expected value of your winnings for this 40-choice version of the game, not the probability of up to 40 matches (which happens only a little sooner than the heat-death of the Universe... ;) ). Is it the case that the other problem (which I'm guessing is related to basic Keno) asks for "E(20)" ?