Question
Train 'A' having a speed of 20 m/s can cross a man in 6
seconds. The length of train 'B' is 40 metres more than the length of 'A'. If the speed of 'B' is 30 m/sec and both trains are travelling towards each other, then find the time taken by them to cross each other.Solution
Length of train 'A' = 20 × 6 = 120 metres
Length of train 'B' = 120 + 40 = 160 metres
Relative speed = 20 + 30 = 50 m/sec
Required time = (120 + 160) ÷ 50 = 280 ÷ 50 = 5.6 seconds
Find the Wrong number in the given number series.
2024, 1583, 1193, 822, 498, 209Find the wrong number in the given number series.
1000, 500, 250, 120, 62.535, 44, 28, 53, 19, 66
Find the wrong number in the given number series.
26, 38, 60, 110, 206, 398
Find the wrong number in the given number series.
17, 36, 73, 134, 220, 352Â
120, 160, 220, 300, 400, 560
In each of the following number series, one term is wrong. Find the wrong term.
18, 16, 48, 46, 138, 140, 408
1 Â Â Â Â Â Â 3 Â Â Â Â Â Â 7 Â Â Â Â Â Â Â 15 Â Â Â Â Â Â Â 33
...Find the wrong no in the given number series.
11, 18, 32, 60, 112, 228
15, 30, 30, 20, 10, 8
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