Question
1600 metres long train crosses a man who is moving in
the same direction with a certain speed, in 16 seconds. If the same train can cross a tree in 10 seconds with the same speed, then find the speed of the man.Solution
Speed of train = 1600/10 = 160 m/sec Let the speed of the man be ‘s’ m/sec Relative speed of the train = (160 – s) m/sec According to the question, (160 – s) = 1600/16 Or, s = 160 – 100 = 60 Therefore, speed of the man = 60 m/sec
26 63 124 215 342 511 ?
...14 8 6 4 7 8.5
...12Â Â Â Â Â Â Â Â Â Â Â Â Â 10Â Â Â Â Â Â Â Â Â Â Â Â 13Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 18.5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 25.50Â Â Â Â Â Â Â ...
If 10 9 38 x 5428
Then, 2x² + 1 = ?
...2, 12, 90, 240, ?, 1260
620 632 608 644 596 ?
...60000 2400 120 8 0.8 ?
...In each of the following questions, a number series is given. After the series a number is given followed by (a), (b), (c), (d) and (e). You have to com...
18 Â Â Â Â 32 Â Â Â 50 Â Â Â 72 Â Â Â Â 98 Â Â Â Â ?
5184, ?, 432, 144, 36, 12
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