1) There is a box. Inside we put two balls, which can be red or blue with equal probability. We take out one ball and see that is red. We put it back. We take out another ball and see that is red again. What is the probability that the other ball is red? 2) What is the probability that both balls are red if this experiment is repeated 3 times and each time the ball we take out is red? 3) What is the probability that both balls are red if this experiment is repeated in times and each time the ball we take out is red?