Question
53 ? 55 49 57
47 What should come in place of the question mark (?) in the following number series?Solution
53 – 2 = 51 51 + 4 = 55 55 – 6 = 49 49 + 8 = 57 57 – 10 = 47
Train X running at a speed of 34 km/hr crosses train Y in 20 seconds. Find the speed of train Y (in km/hr), if the sum of the length of train X and Y is...
Train A leaves a station at a certain time and at a fixed speed. After 4 hours, Train B leaves the same station and moves in the same direction at a uni...
A 130 m long train crosses another 250 m long train running in the opposite direction in 10 seconds. If the shorter train crosses a pole in 10 seconds, ...
- Train ‘X’ is 360 metres long and takes 18 seconds to cross a pole. Speed of train ‘Y’ is 22 m/sec. If both trains cross each other in 16 seconds wh...
A train can cross a pole in 6 seconds while it can cross a 240 metres long platform in 18 seconds. Find the time (in hours) taken by the train to cover ...
1800 metres long train crosses a man who is moving in the same direction with a certain speed, in 18 seconds. If the same train can cross a tree in 9 se...
- Two friends ‘P’ and ‘Q’ started walking towards each other from two towns ‘A’ and ‘B’ respectively. When they met after 7 hours, ‘Q’ ha...
A train crosses a pole and a platform of length 420 metres in 10 seconds and 25 seconds, respectively. Find the length of train.
A train crosses a bridge in 15 secs while it crosses a man standing on a platform in 8 secs. If the speed of train 108 km/hrs, then what will be the ti...
A train travelling with a speed of 90 km/h can cross a pole in 8 seconds. Find the time taken by the train to cross a 300 metres long platform if the sp...