Table:
text: 2009 Indian Premier League
Best economy
Best economy
Player Team Matches Overs Economy_Rate Wickets Average Strike_Rate Best_Bowling
Muttiah Muralitharan Chennai Super Kings 13 50.0 5.22 14 18.64 21.4 3/11
Harbhajan Singh Mumbai Indians 13 44.0 5.81 12 21.33 22.0 4/17
Anil Kumble Royal Challengers Bangalore 16 59.1 5.86 21 16.52 16.9 5/5
Murali Kartik Kolkata Knight Riders 10 34.0 5.91 4 50.25 51.0 2/28
Suresh Raina Chennai Super Kings 14 27.4 5.92 7 23.42 23.7 2/17

Question: What are the lowest overs for the Chennai Super Kings when the economy rate is less than 5.92 with a best bowling number of 2/17 for the best economy of the Indian Premier League 2009?

Question: What is the lowest number of overs for Royal Challengers Bangalore in best economy Indian Premier League 2009?

Question: What is the top batting average if the average is less than 50.25 and less than 13 games played for Indian Premier League Economy 2009?