Coins In A Row Puzzle

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1 Response

  1. saurabh says:

    I think not possible.!!!.

    I approached it like this…

    Assume head as +1 and tail as -1.
    This problem turns:
    Intially a matrix (8 by 8) having all ones and one -1.

    Can we turn it to a matrix having all 1 and no -1 with operations.
    R–> -R
    and C–>-C
    I think it is not possible…
    But not sure…!!