A bag contains 4 red and 6 black balls. A ball is drawn at random. What is the probability that it is red?
Q1. A bag contains 4 red and 6 black balls. A ball is drawn at random. What is the probability that it is red?
Answer: 2 / 5
Explanation: P(red) = Number of red balls / Total balls = 4 / 10 = 2 / 5.