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9, 19, 40, 83, 175, 345, 696
×2+1, ×2+2, ×2+3, ×2+4, ×2+5, ×2+6
So series is 9, 19, 40, 83, (170), 345, 696
175 is wrong number is the series.
The pattern is ×0.5 + 2, ×2 + 4, ×0.5 + 6, ×2 + 8...
So series is 36, 20, 44 , 28, 64, (42), 96
40 is wrong number in the series.
The given number series is based on the following pattern
12 + 152 = 12 + 225 = 237
237 + 132 = 237 + 169 = 406
406 + 112 = 406 + 121= 527
527 + 92 = 527 + 81 = 608
608 + 72 = 608 + 49 = 657
604 is wrong and it should be replaced by 608
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