Question
What should come in place of the question mark (?) in
the following series? 3, 7, 15, 31, 63, ?Solution
The correct answer is D
A man is travelling at a speed of 30 km/h such that he will take 70 minutes to reach his destination. But after completing half the journey, the man too...
Amit and Deepak are standing on point A and B respectively, which are 300km apart. Amit starts moving to and from between A and B at 25km/hr while Deepa...
- Speed of three friends P, Q and R are in the ratio of 7:6:5. If R covers a fixed distance in 40 minutes, how many minutes will P take to cover that same di...
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Travelling at a speed of 54 km/h, Chaman reaches a place 3 minutes early. If he had travelled at a speed of 48 km/h, he would have been 1 minute late. W...
The speeds of Y and Z are in the ratio 4 : 3. If Y raises his speed by 10% and manages to cover 198 km in 3 hours, determine the time taken by Z to trav...
A train covers a distance between stations Dehradun to Rudrapur in 90minutes. If the speed is reduced by 10 km/hr, it will cover the same distance in 9...
Arjun and Bittu together covered a total distance of 150 km. Arjun travels at a speed of 75 km/hr and Bittu at 25 km/hr. The total time they spent trave...
A car travels from town A to town B at 60 km/h and returns from B to A at 40 km/h. What is the average speed for the whole journey?
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