Adam sat with his friends in the Chinnaswamy stadium at Madurai to watch the 100 metres running race organized by the Asian Athletics Association. Five rounds were run. After every round half the teams were eliminated. Finally, one team wins the game . How many teams participated in the race?
(a) 30 (b) 32 (c) 41 (d) 54

• In the last round i.e in the 5th round there were 2 teams, and one team was the winner.
  so in 4th round there were double the team in 5th round.and the same way we have to do the back calculation.
  5th round=2 teams.
  4the round=2*2=4 teams.
  3rd round=4*2=8 teams.
  2nd round=8*2=16 teams.
  1st round=16*2=32 teams.
  so total 32 teams had participated.
• 12 years agoHelpfull: Yes(22) No(2)
• 2^5=32.
  so ans is 32
• 13 years agoHelpfull: Yes(13) No(2)
• total team is 32
  as after first round 16 teams will remain and after 2nd round 8 then after 3rd 4 then after 4th 2 will remain and after fifth round one will stand first in the competition.
  Ramya
• 8 years agoHelpfull: Yes(1) No(0)