Thirty pupils numbered from 1 to 30 are asked to form a line. the first pupil is the line is asked to leave, the second pupil remains. the third pupil is asked to leave the line, the fourth pupil remains....this process is repeated until one pupil remains in the line. what is the original number of the pupil that was left?

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Answers

2014-08-31T18:48:05+08:00
The original number of the pupil left was 16.
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