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Speed of the shorter train = 160/8 = 20 m/sec Let the speed of the longer train be x km/hr According to the question, ⇒ (20 + x) = (160 + 290)/10 ⇒ 20 + x = 450/10 ⇒ x = 45 – 20 = 25 ⇒ x = 25 x 18/5 = 90 km/hr
50 62 ? 96 126 138
...35.25 71 146 296 624 1376
...24 25 46 ? 572 2885
...13 22 40 67 103 ?
...18 29 51 84 128 182
There are three series given below which are following with the same pattern.
Series I: 1, 12, 38, 193, 1355
Series II: 6, B, C, D, E
...30 32 67 206 ? 4166
3 ? 7 16 71 346
...20 21 30 55 104 ?
462 478 510 558 ?
...