Medium
A bag contains 5 red balls and 2 blue balls. A ball is drawn at random. What is the probability that it is red?
Explanation
Explanation
Total number of balls = 5 + 2 = 7. Number of favourable outcomes (red balls) = 5. P(red) = 5/7.
PRO TIP
Re-check your working by substituting the answer back into the original question.