For every one hour two trains will start at the same time,one from Bangalore to Madras another from Madras to Bangalore On parallel tracks. All trains travel with same speed and each train will take 5 hours to reach the other station.How many trains, one train will meet during the journey?

• Dear all,
  
  Please note that Senthil Kumar was right but not 100%, not counting train which is going to start is not correct.
  
  So the answer is : {6,7,8,9,10,11}
  
  Why?
  
  Because,
  
  There should be the very first trains which started this movement,
  so,
  the first trains (from both sides) will meet 6 trains on their way
  the second trains = 7
  3rd trains = 8
  4th trains = 9
  5th trains = 10
  6th trains = 11
  
  How about 7th trains? 12? NO, 11 is the limit, so that is why after 6th trains each train will meet 11 trains including that train which is going to start when they arrive.
  
  Regards,
  Tashimov Zhiger
  Kazakhstan
  Document Control Specialist
• 8 years agoHelpfull: Yes(2) No(0)
• 4
• 14 years agoHelpfull: Yes(1) No(1)
• 9 trains.... before start of a train already 4 trains are in running towards it.... and it will meet a train every half an hour in its journey of 5 hours.... excluding the train going to start at the time when it reach....
• 14 years agoHelpfull: Yes(1) No(1)
• 
  The train that started 5 hour before from another station just arrived to the station when a train about to start.
  But the train will meet Train that started 4 hours before while on journey simillarly all the train that started from 4 hours before to the time it reaches there at another station
  
  So Totally in Nine hours 9 trains, the last train not on journey but in station
  Hence the train will meet 8 trains on journey from one station to other
• 12 years agoHelpfull: Yes(1) No(1)
• The train that started 5 hour before from another station just arrived to the station when a train about to start.
  But the train will meet Train that started 4 hours before while on journey simillarly all the train that started from 4 hours before to the time it reaches there at another station
  
  So Totally in Nine hours 9 trains, the last train not on journey but in station
  Hence the train will meet 8 trains on journey from one station to other
• 12 years agoHelpfull: Yes(1) No(1)
• 10
• 14 years agoHelpfull: Yes(0) No(3)
• 9
• 14 years agoHelpfull: Yes(0) No(1)
• 11
• 14 years agoHelpfull: Yes(0) No(1)
• 11
• 14 years agoHelpfull: Yes(0) No(1)
• 10
• 13 years agoHelpfull: Yes(0) No(1)