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n(S) = ¹⁰C₂ n(E) = ²C₂ + ⁵C₂ P (E) = (²C₂ + ⁵C₂ )/(¹⁰C₂ ) = 11/45
The distance between two stations A and B is 900 km. A train starts from A and moves towards B at an average speed of 30 km/hr. Another train starts fr...
Buses A and B are moving around a circular ground of radius 280 m. If the speeds of the buses A and B are 12 m/sec and 20 m/sec respectively, then what ...
In a 500-metre race, ‘A’ beats ‘B’ by 15 seconds or 75 metres. Find the time taken by ‘B’ to finish the race.
John travelled a total distance of 432 km. He covered 5/8 of this distance at a constant speed of 30 km/h. To complete the entire journey in 13.5 hour...
In a 1000-metre race, 'Ravi' beats 'Shyam' by '200' metres and 'Raj' by '300' metres. If 'Shyam' and 'Raj' participate in a 400-metre race, and 'Raj' ge...
If 180-meter-long train crosses a pole in 18 seconds, find the speed of train in kilo meter/hour.
A boy goes to school at 4 km/Hr and return at a speed of 3 km/hr. If he takes 7 hrs in all. Find the distance from his village to school?
A car covers a distance of 480 km at the speed of 60 kmph in 11 hrs. If the car halted at a tourist spot in the middle of the journey, for how much tim...
Two cars A and B travel from one city to another, at speeds of 72 km/hr and 90 km/hr respectively. If car B takes 1 hour lesser than car A for the jour...
A can complete a work in 15 days, and B can complete the same work in 20 days. If they work together for 6 days, what fraction of the work is left?
