There are n Railway stations. Ticket facility is available between every two stations. Recently, m new stations are bulit so that 42 new tickets are to be printed. How many stations were there? How many are newly constructed

• for each new station will have 2 tickets with other stations i.e..2mn and among new stations m(m-1) tickets will be there.so 2mn+m(m-1)=42.by using options needed to solve
• 12 years agoHelpfull: Yes(1) No(1)
• _x_x_x_x....._x
  
  42*2=84 stations
• 13 years agoHelpfull: Yes(0) No(5)