Question
A train 400 meters long passes a platform of length 200
meters in 36 seconds. What is the speed of the train in km/h?Solution
Total distance = Length of train + Length of platform = 400 + 200 = 600 meters. Time = 36 seconds. Speed in m/s = Distance / Time = 600 / 36 = 100/6 m/s. Speed in km/h = 100/6 × 18/5 = 60 km/h. Correct option: B) 60 km/h
Find the wrong number in the given number series.
120, 126, 138, 162, 220, 306
217Â Â Â Â 210Â Â Â Â Â 236Â Â Â Â Â 299Â Â Â Â Â 423Â Â Â Â 640
...112, 222, 440, 872, 1717 , 3424
In each of the following giving number series, a wrong number is given. Find out the wrong number?
82, 81, 86, 110, 168, 287
- 78, 86, 71, 95, 60, 112
2100, 2140, 2186, 2240, 2300, 2372
9, 10, 12, 18, 42, 160
A-5,  A,  35,  52, 78, 115
Find the wrong number in the given number series.
233, 206, 183, 152, 125, 98
Find the wrong number in the given number series.
2, 4, 12, 48, 120, 1440
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