how many lines can be drawn so that each contains 2 points of a set of 9 points, and no three of the points of the set are collinear?

48
36
54
72

• simply a line is a combination to to or more point
  bt there is we take minimum 2 point by which we make line.
  o there are 9P2 combinations to choose 2 points form the set of 9 point so that we can make line... here we dont use 9C2 bcoz qus. said that no three of the points of the set are collinear
  so that answer is 9P2= 36
• 12 years agoHelpfull: Yes(8) No(6)
• i m richa soni i give solution of dis question b4... bt by mistake i put wrong value of the 9P2
  so i again give my answer is 9P2= 72 not 36
• 12 years agoHelpfull: Yes(3) No(6)