Select the figure from among the given options that can replace the question mark (?) in the following series.
The correct answer is Option 1.
31 35 60 124 ? 441
12 23 65 ? 1239 7409
13 22 40 67 103 ?
2 3 3 ? 49 254
5 10 40 80 320 640
4 a b c d e
Find the value of d.
200 ? 96 38.4 7.68 0
52 25 27 ? 208 1648
47 82 117 152 187 ?
7 15 44 89 ? 533
21, 37, 62, 98, 147, ?
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