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Number of ways in which boy and girls can be seated = 6! ×3! Total number of ways when boys are seating together and girls are seating together = 2! × 6! × 3!
Train ‘A’ travelling with a speed of 84 km/h can cross a pole in 12 seconds. If the length of train ‘B’ is 20% less than that of train ‘A’ a...
Two cars start from a place with a speed of 50 km/hr at an interval of 12 minutes. What is the speed of a man coming from the opposite direction towards...
Train A running at a speed of 48 km/hr crosses train B in 30 seconds. Find the speed of train B (in km/hr), if the sum of the length of train A and B is...
A 150-meter-long train requires 'p' seconds to pass a tree. When the train runs at 75% of its original speed, it takes 20 seconds to pass a 90-meter-lon...
Two trains approach each other at 21 kmph and 25 kmph from 2 places 230 km apart. After how many hours they will meet?
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, ...
Ratio of the lengths of two trains ‘X’ and ‘Y’ is 3:4 respectively and the ratio of time taken by them to cross a pole is 2:3 respectively. If s...
A train travelling with a speed of 54 km/h can cross a pole in 6 seconds. Find the time taken by the train to cross a 180 metres long platform if the sp...
Train X running at a speed of 35 km/hr crosses train Y in 18 seconds. Find the speed of train Y (in km/hr), if the sum of the length of train X and Y is...
