Question
A train running at a speed of 108 km/h crosses a pole in
32 seconds. What is the length of the train?Solution
Speed of running train=108×5/18=30m/sec. time =32sec. distance =S × t =30×32=960 meter
What will come in place of the question mark (?) in the following series?
15, 90, 450, ?, 5400, 10800Â
What will come in place of the question mark (?) in the following series?
102, 111, 136, 185, 266, ?
- What will come in place of the question mark (?) in the following series?
1.36, 2.72, 5.44, 10.88, 21.76, ? 120, 130, 145, 165, ?, 220
715Â Â Â 708Â Â Â 694Â Â Â 673Â Â Â Â 645Â Â Â Â ?
Find the missing number in the given number series.
 6, 13, 32, 87, ?, 737
289    169      121       ?      25       9
...117, 117, 121, 129, 141, ?
24, 8, 15, ?, 12, 4
15, 23, 30, 36, 41, ?