what are the odds roulette I was wondering what the odds would be if I guessed the same 5 numbers on roulette for 17 spins. (38 diff outcomes on a zero and double zero wheel) I think it is 13% but I don't know if I did that right I don't know if that was the percent to guess ALL 5 numbers or just 1 out of the 5 numbers. because you only need to hit one to win. I don't know if I am wording this correctly so if you have questions I can explain myself  

It is often useful when trying to calculate the probability of an event happening at least once to calculate instead the probability of the event not happening at all (let's call that probability $q$) and then taking $p=1-q$ to get the probability of the event happening at least once. 
The probability of not winning on any particular spin is $\frac{38-5}{38}$. The probability of not winning 17 spins in a row is $(\frac{38-5}{38})^{17}$ since they are independent. 
Thus, the probability of winning at least once is $1-(\frac{38-5}{38})^{17}\approx9.087\%$
