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I. 84x² - 167x - 55 = 0 84x² - 35x - 132x - 55 = 0 7x (12 x – 5) – 11 (12 x – 5) = 0 (12 x – 5) (7 x – 11) = 0 ∴ x = 5/12, 11/7 II. 247y² + 210y + 27 = 0 247y² + 171y  + 39 y + 27 = 0 19 y(13 y + 9) + 3(13 y + 9) = 0 (19 y + 3) (13 y + 9) = 0 ∴y = -3/19, -9/13 Hence, x>y
8 9 30 155 ? 9837 108218
...Select the number from among the given options that can replace the question mark (?) in the following series.
8, 27, 64, 125, 216, ?
31Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 16.5Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 18Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â...
100Â Â Â 180Â Â Â 294Â Â Â 448Â Â Â 648Â Â Â ?
9060 5685 3488 2157 1428 1077
51Â Â Â 86Â Â Â 121Â Â Â 156Â Â Â 191Â Â Â ?
1Â Â Â Â 2Â Â Â Â Â 11Â Â Â Â Â 36Â Â Â Â Â Â 85Â Â Â Â Â Â ?
...979.001 + 4.0087× 82.79 = ?
...Select the number from among the given options that can replace the question mark (?) in the following series.
2, 6, 12, 20, ?, ?
1,2, 5, ‘?’, 41, 122, 365
