Question
A train crosses a platform in 48 seconds travelling with
a speed of 120 km/hr. If the length of the train be 600 metres, then the length (in metres) of the platform is?Solution
Total distance covered by train in 48 seconds with the speed of 120 km/hr. Distance = 120 km/hr × 48 sec = 120 × 5/18 × 48 = 1600 metres. Length of train + length of platform = 1600 metres 600 + length of platform = 1600 Length of platform = 1000 m
8    13    36    123    ?   2585
14, 86, 150, ?, 254, 294
168, 164, 155, 139, ?, 78
- What will come in place of (?), in the given number series.
1, 1, 2, 3, 5, ?, 13 4, 4, 5, ? , 248, 1248
195% of 1420 + 72 × 25 =?
What will come in place of the question mark (?) in the following series?
3.5, 9.5, 27.5, 81.5, 243.5, 729.5, ?
8 12 30 105 ? 2598.75
...Find the missing number in the given number series.
1, 2, 6, 24, 120, ?11    16    42    141    ?   2945   17700
...