Question
Train X, traveling at a speed of 36 km/hr, crosses
another train Y, which is moving in the opposite direction at a speed of 72 km/hr, in 't' seconds. If the ratio of the lengths of train X and train Y is 5:4, and train X crosses a pole in 40 seconds, find the value of (t + 11).Solution
Length of train X = 40 × 36 × (5/18) = 400 m Length of train Y = (400/5) × 4 = 320 m => t = (400 + 320)/[(36 + 72) ×(5/18)] = 24 sec Required value = (t + 11) = 24 + 11 = 35
100, 164, 740, 3044, 9444, 20320
In each of the following questions, one number in the series does not follow the pattern of the others. Identify that wrong number in the series.
18, 27, 38, 56, 66, 83
Find the wrong number in the given number series.
1600, 800, 1200, 400, 100 , 12.5
In each of the following number series, one term is wrong. Find the WRONG term.
5, 10, 19, 33, 49, 70
The following numbers form a series. Find the odd one out.
24, 36, 54, 78, 121.5, 182.25
Find the wrong number in the given number series.
204, 215, 277, 337, 416, 518164, 304, 433, 551, 658, 752
9256Â Â 6844Â Â Â 4888Â Â 3350Â Â 2152Â Â 1276
273, 204, 138, 84, 39, 3
