The correct answer is D
5 3 3 5 15 ?
7 7 14 42 ? 840
1 9 64 255 755 1835
3 25 173 1041 5201 20809
10 a ...
123 125 129 132 ? 145
25 34 61 106 169 ?
4 5 9 27 ? 723
7 98 644 3145 12596 37797
3, 49, 191, 477, ?, 1673
If 16 15 26 69 260 x,
Find 75% of x+ x
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