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Sum of 25 numbers = 25 × 22 = 550 Sum of first 12 numbers = 12 × 14 = 168 Sum of last 12 numbers = 12 × 17 = 204 Therefore, 25th number = 550 – (168 + 204) = 178
Train X, traveling at a speed of 72 km/hr, crosses another train Y, which is moving in the opposite direction at a speed of 108 km/hr, in 't' seconds. I...
Two trains of length 200m and 160m respectively are running on parallel lines of rails. When running in the same direction the faster train passes the s...
Train ‘A’ running with a speed of 63 km/hr can cross a standing goods train of 4 times its length in 24 seconds. Find the time taken by 150 metres l...
Two trains of same length are running in parallel tracks in the same direction with speed 64 km/hr and 100 km/hr respectively. The latter completely cro...
Train A running at speed of 126 km/hr crosses a platform having twice the length of train in 15 sec. Train B whose length is 400m crosses same platform ...
How many seconds will a train 66 m in length, travelling at the rate of 43 km an hour, take to pass another train 86 m long, proceeding in the same dire...
Two trains of same length are running in parallel tracks in the same direction with speed 40 km/hr and 100 km/hr respectively. The latter completely cro...
A train Lucknow Express leaves station A at 4 am and reaches station B at 7 am. Another train Kanpur Express leaves station B at 6 am and reaches statio...
600 metre long train ‘A’ is running with a speed of 57.6 km/hr. Train ‘B’ which is 641 metre long is running with a speed of 90 km/h in opposite...
Train A running at a speed of 30 km/hr crosses train B in 20 seconds. Find the speed of train B (in km/hr), if the sum of the length of train A and B is...
