Question: Jack has a box containing 2 Red marbles and 1 Green marble. He suggests to Jill that they play the following game. If Jill reaching
Jack has a box containing 2 Red marbles and 1 Green marble. He suggests to Jill that they play the following game. If Jill reaching in the box and randomly selects 2 marbles and one is red and one is green, then she has to go up the hill and fetch a pail of water while he gets to sit at home and do math puzzles. If both marbles are the same colour, then he will go up the hill and fetch the pail of water and she can do math puzzles. Jill protests and says the game is not fair. Jack tells her that she can make the game fair by adding one marble to the box. Which colour marble should she add. Show your work. Note: In a fair 2-person game, each person has an equal chance to win.
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