Horse Race

Replies

• 

  Saandeep Sreerambatla

  The number of races required are 7
  
  Explanation:
  
  Divide 25 into 5 groups of 5 horses each.
  Name them as a1 ,a2 ,a3,a4 ,a5
  b1 ,....,b5 ; c1,...c5 ,d1....d5 ,e1....,e5
  Now 5 races in these 5 groups which gives 5 winners , assume the winners are in the order i gave the names .
  i.e., In the first race a1 is first , a2 is second and so on.
  
  Now conduct a 6th race between a1 ,b1,c1,d1,e1 who are the winners of 5 races.
  This race results in 3 toppers.
  consider a1 ,b1,c1.
  
  Now a1 is the fastest put aside.
  We can neglect the teams d and e and c2 to c5.
  b2 can get atmost 3rd position so he is in the race neglecting b3-b5.
  a2 and a3 are included as they probably can get 2 or 3.
  
  So the seventh race is between a2 ,a3 ,b1,b2,c1
  
  we can get the winners !!!
• 

  pradeep_agrawal

  That was quick. It's a correct answer with correct and good explanation.
  
  Good going English-Scared.
  
  -Pradeep