Two cards were drawn, without replacement, from a pack of 52 cards. what is the probability that they are both kings or both queens?
The required probability = probability of picking 2 kings + probability of picking 2 queens.
= [(4/52)*(3/51)] + [(4/52)*(3/51)] = 0.905% chance.
A bag contains 4 yellow, 5 red, 3 green and 4 black balls. If 4 balls are drawn randomly without replacement, what is the probability that the balls drawn contains balls of different colors?
A bag contains Red Balls and Black Balls. Two balls are drawn without replacement. The probability that both the balls drawn are red is 1/2. What is the minimum number of Red and Black Balls for which this probability is satisfied?
