Question

# 1. A bag contains blue and red balls. Two balls are drawn randomly without replacement. The probability of

selecting a blue and then a red ball is 0.2. The probability of selecting a blue ball in the first draw is 0.5. What is the probability of drawing a red ball, given that the first ball drawn was blue?
a) 0.4
b) 0.2
c) 0.1
d) 0.5

2. A die is rolled thrice. What is the probability that the sum of the rolls is atleast 5.
a) 1/216
b) 1/6
c) 3/216
d) 213/216

Statistics and Probability