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4 + 7 = 11 11 + 11 = 22 22 + 15 =Â 37 37 + 19 = 56 56 + 23 = 79 79 + 27 = 106
2, 6, ?, 20, 30, 42
58     69      56       ?      54       73
...5 6 15 40 89 170 ?
...Choose the missing term.
R, U, X, A, D,?
10, 18, 53, 115, 204, ?
143 Â Â Â Â 119Â Â Â Â 107Â Â Â Â 101Â Â Â Â Â 98Â Â Â Â ?
23Â Â Â Â 40Â Â Â Â Â Â 67 Â Â Â Â Â Â 104Â Â Â Â Â Â ? Â Â Â Â Â Â 208
...13, 29, 65, 129, ?, 373
78, 80, 84, ?, 108, 140
119 × 13 + 150/100 × 850 =?