Probability of Throwing at least 1 "6" vs Double 6 in Dice Rolls

  • Thread starter Thread starter karambos
  • Start date Start date
  • Tags Tags
    Dice Probability
karambos
Messages
1
Reaction score
0
TASK: Show that throwing at least one "6" within 4 throws of a die is more likely than throwing a "double 6" within 24 throws of two dice.

SOLUTION: I can do the first result two ways. Firstly, I can use the complement of "four dice all showing something other than six" which would be 1 - ((5/6)^4) = 51,7%. Or I can use the long-winded version of

Binomial[4, 1]*((5/6)^3)*((1/6))^1) +
Binomial[4, 2]*((5/6)^2)*((1/6))^2) +
Binomial[4, 3]*((5/6)^1)*((1/6))^3) +
Binomial[4, 4]*((5/6)^0)*((1/6))^4)

= 51,7%

which translated into words is roughly: "the chances of selecting 1 from 4 multiplied by the chances of three dice showing not six multiplied by the chances of one die showing six PLUS the chances of selecting two from 4 etc etc"

I can show the second part by using the complement of "no six or exactly one six" which is 1 - ((5/6)^12) - (Binomial[12,1])*(5/6)^11)*(1/6)

MY QUESTION: if I were insane enough (which I am, believe me :eek: ) to want to solve the second part using the "long-winded" binomial version, how would I do it?

I'm gratefu for any help
 
Physics news on Phys.org
P(getting a double 6) = 1/36
P(in 24 throws , no double throws) = (35/36)^24
P(getting atleast 1 double throw in 24 throws)
= 1-(35/36)^24
approx .491 or 49.1%

Hence the result

-- AI
 
Hi all, I've been a roulette player for more than 10 years (although I took time off here and there) and it's only now that I'm trying to understand the physics of the game. Basically my strategy in roulette is to divide the wheel roughly into two halves (let's call them A and B). My theory is that in roulette there will invariably be variance. In other words, if A comes up 5 times in a row, B will be due to come up soon. However I have been proven wrong many times, and I have seen some...
Namaste & G'day Postulate: A strongly-knit team wins on average over a less knit one Fundamentals: - Two teams face off with 4 players each - A polo team consists of players that each have assigned to them a measure of their ability (called a "Handicap" - 10 is highest, -2 lowest) I attempted to measure close-knitness of a team in terms of standard deviation (SD) of handicaps of the players. Failure: It turns out that, more often than, a team with a higher SD wins. In my language, that...
Back
Top