Correct Answer - Option 3 : 18
Given
wicket taken by bowler in 10 matches = 60
Formula used
Average = Sum of observation/No. of observation
Calculation
⇒ total Balls bowled by Bowler = 6 × 6 × 10 = 360
⇒ Bowling average = total balls/ wicket
⇒ Bowling average = 360/20 = 18 balls/wicket
∴ The bowling average of bowler is 18 balls/wicket