Filling Box

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Sam keeps marbles in a box everyday in such a way that the number of marbles in the box doubles with each passing day. For e.g., he puts in 1 marble on the first day, 2 on the second day, 4 on the third day and so on. The box gets full on the 18th day. On which day was the box half full?

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  • 2 Answer(s)

    17th day

    pnikam Expert Answered on 17th August 2015.
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    That was too easy.  Better question, how big was the box?

    edgraham Starter Answered on 30th December 2016.
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