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2 May, 00:27

You are given an n*n board, where n is an even integer and 2≤n≤30. For how many such boards is it possible to cover the board with T-shaped tiles like the one shown? Each cell of the shape is congruent to one cell on the board.

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  1. 2 May, 04:25
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    7

    Step-by-step explanation:

    The number of cells in a tile is 4. If colored alternately, there are 3 of one color and 1 of the alternate color. To balance the coloring, an even number of tiles is needed. Hence the board dimensions must be multiples of 4.

    In the given range, there are 7 such boards:

    4*4, 8*8, 12*12, 16*16, 20*20, 24*24, and 28*28
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