Suppose a bowl has 9 chips. One chip is labeled "1", three chips are labeled "3", and five chips are labeled "5". Suppose two chips are selected at random with replacement. Let the random variable X equal the absolute difference between two draws (e.g. if the first draw is 1 (1₁) and the second draw is 5 (5₂), then the absolute difference is |1-5|=4.

Find the probability that both drawers aren't the same.

Find P(X=2|X>0)

on average, what is X equal to?