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Relative speed = 40 + 32 = 72 km/hrs Time taken to meet for the first time = length of the track/ relative speed => 840 / (40 + 32) => (840 x 18)/(72 x 5) = 42 sec
15 25 40 65 ? 195
1 1 8 4 27 9 ?
...21 84 168 172 ? 348
...6 7 15 46 185 ?
...56. 23 45 89 177 363 705
...3456 1728 2592 6485 22680 102060
...6 6 3 6.5 12 33
...7 98 644 3145 12596 37797
...D irection: Which of the following will replace ‘?’ in the following series.
543,’?’, 564 ,588, 660
...If 2, 7, 20, x , 110, 235,
Then, 7 x + 7√x = ?
