I have 10 red balls, 10 blue balls, and 2 baskets.
You are free to choose the numbers of red balls, and the numbers of blue balls to put to the first basket. Then you have to put rest of the balls to the 2nd basket.
Then I will choose a basket and take a ball blindly.
If I get a red ball I will give you 2 dollars, but If I get blue ball you have to give me 3 dollars.
Will you accept my challenge? Why?