In series 1, only one number is wrong. If the wrong number is corrected, the series gets established following a certain logic. Complete series 2 with same logic and answer the given question.
| Series 1: | 2 | 4.5 | 11 | 30 | 93 | 312 | 1136 |
| Series 2: | 1 | a | b | c | d | e | f |
What will come in place of (b) ?
Explanation
The given number series 1 follows the logic,
⇒ 2×2+0.5= 4.5
⇒ 4.5×2+0.5×4= 11
⇒ 11×2+2×4= 30
⇒ 30×2+8×4= 93
⇒ 93×2+32×4= 312
⇒ 312×2+128×4= 1136
Similarly, series 2
⇒ 1×2+0.5= 2.5
⇒ 2.5×2+0.5×4= 7
⇒ 7×2+2×4= 22
⇒ 22×2+8×4= 76
⇒ 76×2+32×4= 280
⇒ 280×2+128×4= 1072
Hence, Option E is correct.
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