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anonymous
 5 years ago
consider rolling two dice.what is the probability that the sum is odd given that one dice shows a 3?
anonymous
 5 years ago
consider rolling two dice.what is the probability that the sum is odd given that one dice shows a 3?

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julie
 5 years ago
Best ResponseYou've already chosen the best response.0well, you could brute force this

julie
 5 years ago
Best ResponseYou've already chosen the best response.0so assuming it's a six sided dice...

julie
 5 years ago
Best ResponseYou've already chosen the best response.0there are six possibilities for the other die

julie
 5 years ago
Best ResponseYou've already chosen the best response.03+1 = 4 [even] 3+2 = 5 [odd] 3+ 3 = 6 [even] 3+ 4 = 7 [odd] 3 + 5 = 8 [even] 3 + 6 = 9 [odd]

julie
 5 years ago
Best ResponseYou've already chosen the best response.0so you know the roll of one of the dice is a three

julie
 5 years ago
Best ResponseYou've already chosen the best response.0looks to me there are 3 options that get you odd, 3 that give you even

julie
 5 years ago
Best ResponseYou've already chosen the best response.0(so 3/6 possibilities for the second die to make an odd number) = 50%

julie
 5 years ago
Best ResponseYou've already chosen the best response.0that's generally how these work  you want to consider <success case>/<total possibilities>  especially given all possibilities are equally likely e.g. a fair die

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh wow i wish my teacher would have put it that way
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