IBPS RRB PO Prelims 21 Aug 2022 Shift 2 Paper
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Question : 60 of 80
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In the following number series, only one number is wrong. Find out the wrong number.
3, 7, 15, 39, 63, 127, 255, 511
3, 7, 15, 39, 63, 127, 255, 511
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