InterviewSolution
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InterviewSolution
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What number will come at the place of question mark?1. 4, –8, 16, –32, 64, ? (1) 128 (2) –128 (3) –64 (4) –192 2. 1/81 ,1/54 , 1/36 , 1/24, (?) (1) 1 / 32 (2) 1 / 9 (3) 1 / 16 (4) 1 / 18 3. 2, 6, 3, 4, 20, 5, 6, (?), 7 (1) 25 (2) 28 (3) 30 (4) 42 4. 10, 5, 13, 10, 16, 20, 19, (?) (1) 22 (2) 23 (3) 38 (4) 40 5. 30, 2, 20, 6, 12, 12, ? (1) 6 (2) 8 (3) 10 (4) 15 |
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Answer» 1. (2) –128 x(–2) series 2. (3) 1 / 16 Denominator decreases by factor 2 / 3 3. (4) 42 Middle term is product of two of its adjacent terms. 6 x 7 = 42 4. (4) 40 1st series → +3, +3, +3 2nd series → x2, x2, x2 20 x 2 = 40 5. (1) 6 Dual series 1st series → –10, –8, –6 2nd series→ x3, x2, x1 ⇒ 12 – 6 = 6 |
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