Given,
Number of times batsman hits the boundry = 6
Total balls played = 30
Number of times that batsman does not hit the boundry = 30 - 6 = 24
Probability (number of times he hits a boundry) \(=\frac{\text{number of times he hits a boundry}}{\text{total number of balls played}}\) \(=\frac{6}{30}=\frac{1}{5}\)
Probability (number of times he does not hits a boundry) \(=\frac{\text{number of times he does not hits a boundry}}{\text{total number of balls played}}\) \(=\frac{24}{30}=\frac{4}{5}\)