Runs in 1st over = 10 Runs in 2nd over = {(8 × 2) - 10} = 6 Runs in 3rd over = {(9 × 3) - (8 × 2)} = 11 Runs in 4th over = {(9 × 4) - (9 × 3)} = 9 Runs in 5th over = {(10 × 5) - (9 × 4)} = 14 Average run rate = (10 + 6 + 11 + 9 + 14)/5 = 50/5 = 10 runs/over Note∶ The data, that is given, is the run rate, not the runs that were scored in that particular over.