For the experiment of tossing a six sided die twice, what is the probability that the sum is odd or prime? Algebra Systems of Equations and Inequalities Probability and Permutations 1 Answer MattyMatty Dec 3, 2017 #19/36# Explanation: #= P[ "2, 3, 5, 7, 9, or 11 eyes" ]# #= (1+2+4+6+4+2)/36# #= 19/36# # P[ "k eyes (*)"] = {((k-1)/36", 2"<="k"<="7"),((13-k)/36", 7"<="k"<="12"),(" 0 , otherwise (k<2 or k>12)"):}# #"(*) when tossing twice (or tossing two dice)"# Answer link Related questions What are Permutations? How do you calculate permutations using the formula? How many permutations can be made from the word assassin? How many permutations of the letters abcdefgh contain? How do you calculate permutations of a word? How do you calculate permutations of numbers? Why are permutations important? How do you evaluate#x= _6P_3#? Why is order important in permutations? How many ways can 14 books be organized on a shelf? See all questions in Probability and Permutations Impact of this question 5092 views around the world You can reuse this answer Creative Commons License