Posted by deborah on Sunday, September 14, 2008 at 5:45pm.
idk
It doesn't matter whether the 3 appears or not on the dice in the first roll. What matters is whether the sum of the winning roll is even or odd.
The sum will be odd if one dice is an even number, and one dice is an odd number
The sum will be even if both dice are even or both dice are odd.
The probability of any dice being even is 1/2
The probability of any dice being odd is 1/2
The probability of the first dice being even and the second dice being even is 1/2 * 1/2 = 1/4
The probability of the first dice being odd is 1/2 * 1/2 = 1/4
The probability of the first dice being even and the second being odd is 1/2*1/2 = 1/4
The probability of the first dice being odd and the second being even is 1/2*1/2 = 1/4
Therefore the probability of an even sum (even, even) or (odd,odd) is 1/4+ 1/4 = 1/2
And the probability of an odd sum (even, odd) or (odd, even) is 1/4+1/4 = 1/2
Related Questions
math - two dice are rolled find the probability of getting a 5 on either dice or...
statistics - If a dice is rolled one time, classical probability would indicate ...
Math - Two dice are rolled. Find the odds that the score on the dice is either 7...
math - Two dice are rolled. Find the odds that the score on the dice is either ...
Math - Two dice are rolled. Find the odds that the score on the dice is either ...
Computer Science Java - I have to write program for a dice game and use a ...
math - Two dice are rolled. Find the probability of getting a 5 on either die or...
Probability - Two dice are rolled. Find the odds that the score on the dice is ...
drawing - Two dice are rolled. What is the probability of rolling a total of ...
Math - Two "Loaded" Dice each ahve the property that a 2 or a 1 is ...
For Further Reading
