Question
A train running with a speed of 108 km/hr can cross a
pole in 22 seconds and a platform in 25 seconds. Find the length of the platform.Solution
Speed of the train = 108 × (5/18) = 30 m/sec Length of the train = 30 × 22 = 660 metres Let the length of the platform be ‘x’ metres Therefore, 660 + x = 30 × 25 Or, x = 750 – 660 = 90 metres
30 27 20 9 ? - 25
147      138       120      93      ?      12
...92,  51,  21,  13.5,  x,  4.25
find the value of (10x + x -5)?
4, 8, 24, ?, 840, 9240
(45)2 ÷ ∛729 + (35)2 ÷ 1.4 =?
A series is 11, 20, 42, 82, 166, 330
If another series 4, a, b, c, d, 106 follows the same pattern as the given number series, then find the appr...
29    51    95    183    ?     711
What will be the next number in the series?
2, 7, 23, 70, ?
13 22 40 67 103 ?
...If 5,  6,  4,  39,   x,  585,
then, find the value of ((x/2) + 1 + 2x)?
