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ATQ, Let the required number of workers be ‘w’ and let efficiency of each worker be ‘m’ units per day {(15 × 20 × m) ÷ 2000} = {(25 × w × m) ÷ 4000} So, w = 24
51 52 48 57 ? 66 30
...47, 72, 122, ?, 297, 422
150 - 10× ( 7 - 2)/4× 8 = ?
...123, 122, 114, 87, ?, -102
7, 6, 10, 27, 104, ?
84, 97, ?, 162, 214, 279
4 9 28 99 ? 2105 12660
...(14.073)² + (32.103)² + (43.9653)² + (52.983)² + ? = (102.45)² + (98.007)²
8, 12, 20, 32, 52, ?, 136
9 25 ? 121 221 337
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