SOLUTION: The faces of a normal die are numbered from one to six. Three such dice are used in an experiment. The first one is thrown and the number shown on the top face is a five. The secon

Algebra ->  Permutations -> SOLUTION: The faces of a normal die are numbered from one to six. Three such dice are used in an experiment. The first one is thrown and the number shown on the top face is a five. The secon      Log On


   



Question 1162449: The faces of a normal die are numbered from one to six. Three such dice are used in an experiment. The first one is thrown and the number shown on the top face is a five. The second and third dice are then thrown. Calculate, as a fraction, the probability that :
All three numbers shown are odd:
a. 1 / 2
b. 1 / 4
c. 2 / 3
d. 1 / 6

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
The first is known to be odd, the second at third each has a probability of 1/2 of being odd, so that both of their being odd has probability of 1/4.