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Hi Vincent, When in doubt draw a picture. The dark brown square is a diagram of last year's arrangement of tulips and the larger square is this year's arrangement. The difference is two strips, one along the bottom and one along the right and a small square of tulips in the lower right corner. In these three light brown pieces there are 29 tulips and the number in the lower right corner is a square so it must be 1 or 4 or 9 or... Does this help? Penny s | ||||||||||||
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Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. |