1) Two trains start simultaneously from Mumbai and Chennai, respectively towards each other on the
same track. The distance between the two stations is 560 km and speed of the trains are 30 kmph& 40 kmph.
Simultaneously with the trains, a sparrow sitting on the top of one of the train starts towards the other and
reverses its direction on reaching the other train and so on. If the speed of the sparrow is 80 kmph then the
distance that the sparrow flies before being crushed between the train is.

2) Due to technical snag in the signal system two trains start approaching each other on the same rail track
from two different stations, 240 km away from each other. When the train starts a bird also starts moving to
and fro between the two trains at 60 kmph touching each time each train. The bird is initially sitting on the
top of the engine of one of the trains and it moves so till these trains collide. If these trains collide one and a
half hour after the start, then how many kilometres bird travels till the time of collision of trains?

3) train leaves Rampur at 2:15 pm and travels at the rate of 50 kmph. Another train leaves Rajrupur for
Rampur at 1:35 pm and travels at the rate of 60 kmph. If the distance between Rajrupur and Rampur is 590
km at what distance from Rampur will the two trains meet?

4) Two stations P & Q are 110 km apart on a straight line. One train starts from P at 8 a.m. and travels
towards Q at 40 kmph. Another train starts from Q at 10 a.m. and travels towards P at 50 kmph. At what time will they meet?

5) The speed of the two trains are in the ratio 3:4. They are going in opposite directions along parallel tracks. If each takes 3 seconds to cross a telegraph post, find the time taken by the trains to cross each other completely?

6) 0, 6, 24, 60, 120, 210, ?

7) 3, 15, 35, 63, ?, 143

8) 17, 36, 52, 63, 67, ?

9) 10, 28, 64, 115, 175, ?

10) 64, 72, 79, 93, 103, ?