SOLUTION: "Alicia is playing a game in which she draws marbles from a box. There are 50 marbles, numbered 01 to 50. Alicia draws one marble from the box and sets it aside, then draws a secon

Algebra ->  Probability-and-statistics -> SOLUTION: "Alicia is playing a game in which she draws marbles from a box. There are 50 marbles, numbered 01 to 50. Alicia draws one marble from the box and sets it aside, then draws a secon      Log On


   

Question 1066934: "Alicia is playing a game in which she draws marbles from a box. There are 50 marbles, numbered 01 to 50. Alicia draws one marble from the box and sets it aside, then draws a second marble. If both marbles have the same units digit, then Alicia wins. If the first marble she draws is 25, what is the probability that Alicia will win on the next draw?
I'm not sure on how to do this at all, thanks in advance!
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
"Alicia is playing a game in which she draws marbles from a box. There are 50 marbles, numbered 01 to 50. Alicia draws one marble from the box and sets it aside, then draws a second marble. If both marbles have the same units digit, then Alicia wins. If the first marble she draws is 25, what is the probability that Alicia will win on the next draw?
I'm not sure on how to do this at all, thanks in advance!
-----
1st draw:: 25
2nd successful draw:: 5 or 15 or 35 or 45
----
P(2nd draw has units digit 5) = 4/49
-------------
Cheers,
Stan H.
--------------