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Let tap ‘A’ fill the tank and tap ‘B’ empty the tank. Taking LCM of 16 and 20 = 80 Efficiency of A = 5 Efficiency of (A – B) = 4 Efficiency of B = 5 – 4 = 1 Tap B will empty the tank = 80/1 = 80 So, tap B will empty the tank in 80 hours.
What will come in place of the question mark (?) in the following series?
112, 123, 144, 169, 190, ?
300, 150, 150, ?, 450, 1125
45, ?, 84, 114, 151, 195
32, 64, 8, ?, 2, 4
252, 235, 220, 207, 196, ?
{(12√5 + 6√5 )} ×{(10√5 - 5√5 )} - 8² + 6² = ?
64, 32, 48, 120, 420, ?
101, 103, 107, 109, 113, ?
200 ? 96 38.4 7.68 0
18, 30, 46, 66, 90, ?