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# Help with a math probability question please?

There are 3 red balls, 5 green balls, and

1 yellow ball in a hat. If you draw the yellow ball, you gain $10. If you draw any of the red balls, you gain $4. If you draw a green ball, you lose $3. If you were to play this game 25 times, replacing the drawn ball each time, how much money can you expect to gain or lose?

Thank you :)

### 2 Answers

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- LeonardLv 71 month ago
for one draw, expected profit is (1/9)($10) + (3/9)($4) + (5/9)(-$3) = $0.78.

So for 25 draw, expected gain is 25($0.78)=$19.50.

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