Mathematics for IGCSE & O level - Probability (Section 2 - No. 12)

A bag contains 4 red balls and 6 blue balls. If a ball is selected at random, what is the probability it is red?

1/5

2/5

3/5

1/10

The probability is the number of red balls divided by the total number of balls: 4/10 = 2/5.