Three standard fair 6-sided dice are rolled. What is the expected number of 6's rolled? (For example, if two 6's and a 5 are rolled, then the answer is 2.)
+12 It's just two sequential sets of rolls to get a single six. It's expected that we'll take, on average, six rolls to get the first six, then another six from that point to get the second six. The expected numer of rolls to get to two sixes is 12. Dairy Queen Survey
