SOLUTION: A desk has 3 drawers. The first contains 2 gold coins. The 2nd has 2 silver coins and the third has 1 gold and 1 silver. A coin is drawn from a drawer selected at random. If the co

Algebra ->  Probability-and-statistics -> SOLUTION: A desk has 3 drawers. The first contains 2 gold coins. The 2nd has 2 silver coins and the third has 1 gold and 1 silver. A coin is drawn from a drawer selected at random. If the co      Log On


   



Question 1015270: A desk has 3 drawers. The first contains 2 gold coins. The 2nd has 2 silver coins and the third has 1 gold and 1 silver. A coin is drawn from a drawer selected at random. If the coin selected was was silver, what is the probability that the other coin in that drawer is gold?
Answer by FrankM(1040) About Me  (Show Source):
You can put this solution on YOUR website!
Here are the 3 choices -
G-G
S-S
G-S
You chose S, so there is a 1 in 3 chance the other coin is G.
Because, you could have S(1) or S(2) or S(3) in your hand, so, respectively, the other coin choices are S(2), S(1), or G(3)