two balls are drawn in succession,without replacement, from the box containing 3 red and 2 white balls, what is the probability of drawing a white on the second draw?

Answer 1

Assuming a red ball is chosen on first draw, P(w) = 2/4

Assuming a white ball is chosen on first draw, P(w) = 1/4

Either-or probabilities are found by adding the individual probabilities.