Melvin Delgado answered 11/22/2009 If Two Fair Dice Are Rolled, Find The Probability That The Roll Is A Double Given That The Sum Is 11? A "double" in a roll of a pair of dice is having two of the same number showing. The only doubles for a pair dice have the sums 2,4,6,8,10,12. So there is No outcome to satisfy the conditions. The probability is 0.
