Question
Which country has launched the first fleet of hydrogen
powered passengers trains?Solution
The country has developed the first fleet of hydrogen powered passenger trains which has replaced 15 diesel engine trains.
32, 48, 72, 108, 162, ?
14.8% of 7200 – 16.4% of 6200 + 15.09% of 8100 = 10% of ?
4, 4, 12, 60, ?, 3780
 6, 20, 63, 193, ?, 1758 Â
Find the missing number in the given number series.
4, ?, 110, 665, 4660, 37285
2.5Â Â Â Â Â Â Â Â Â 1.25Â Â Â Â Â Â Â 1.25Â Â Â Â Â Â Â 1.875Â Â Â Â Â 3.75Â Â Â Â Â Â Â ?
...7 47 ? 223 359 527
...124, 128, ?, 135, 110, 146
80, ?, 240, 80, 20, 4Â
23Â Â Â Â 40Â Â Â Â Â Â 67 Â Â Â Â Â Â 104Â Â Â Â Â Â ? Â Â Â Â Â Â 208
...