1 Gold Silver Small set of drawers Three drawers, each with two coins.

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Presentation transcript:

1 Gold Silver Small set of drawers Three drawers, each with two coins

2 Select one drawer at random. Choose one coin from this drawer. Examine it. Suppose that it is gold. What is the probability that the other coin from the same drawer is also gold?

3 Simplify the symbols: GG SS GS

4 G1G1 G2G2 S3S3 S4S4 G5G5 S6S6

5 Distinguish the coins with the subscripts 1, 2, 3, 4, 5, 6. These numbers will be invisible to the person playing the game.

6 The question is this: P(G left in drawer | you see G) = ?

7 Enumerate the sample space:

8

9