Mark:
DICE
C(32,19)*5^13 = 424,040,039,062,500,000
Because the dice are distinct, we must first select 19 of them as those that show a 5. This can be done in C(32,19) ways. Next we look at all ways that the remaining 13 dice can be rolled. There are 5 choices for the first die, 5 for the next, and so on, resulting in 5^13 ways for the remaining 13 dice to appear. Because each of the C(32,19) is a unique set of 19, each is paired with the 5^13 ways for the remaining dice to appear. This results in Marks answer. He sure is one clever guy!
TRBOUUBSLHE
bush is in trouble

(I could not possibly comment). :wink:
After administering a new medicine, a collection of 314 lab rats were tested for four diseases.
One-hundred fifty-three (153) of the rats tested positive for Asefachia, 179 tested positive for Bunkeritis, 148 tested positive for Cluenegligencia, and 155 tested positive for Dipchillase.
Among the same 314 rats, 85 tested positive for both Asefachia and Bunkeritis, 71 tested positive for both Asefachia and Cluenegligencia, 75 tested positive for both Asefachia and Dipchillase, 85 tested positive for both Bunkeritis and Cluenegligencia, 90 tested positive for both Bunkeritis and Dipchillase, and 77 tested positive for both Cluenegligencia and Dipchillase.
I hope that is clear to you all.
We also know that 38 tested positive for all three of Asefachia, Bunkeritis, and Cluenegligencia, 41 tested positive for all three of Asefachia, Bunkeritis, and Dipchillase, 34 tested positive for all three of Asefachia, Cluenegligencia, and Dipchillase and 47 tested positive for all three of, Bunkeritis, Cluenegligencia, and Dipchillase.
Do you follow!
Finally, we know that 17 of the 314 lab rats tested positive for all four of the diseases.
How many of the 314 lab rats tested negative for all four of the diseases