In a chess tournament each of the six players will play with
every other player exactly once. How many matches will be
played during the tournament?

• 5+4+3+2+1=15
  if 2 players are playing thn no of match= 1
  if 3 player are playing thn no of match =2
  hence for Pth player no of matches = n-1 where n= no of players
  so for 6th player it is 5
  for 5th it is 4....
  for 1 it is 0.
  don't be confuse 1 already played with 6,5,4,3,2
  __________________
  6--->5,4,3,2,1
  5----->4,3,2,1
  4---->3,2,1
  3---->2,1
  2---->1
  Pth player----> no of matches
• 8 years agoHelpfull: Yes(0) No(0)