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Q27.The grid of squares shown in the figure is to be tiled (covered with tiles) with the tiles shown in the options. The covering tiles must not overlap and should not have gaps around them. Only four squares in the middle are not to be tiled. Once a tile is chosen, other tiles must be of that type only. Tiles can be flipped and rotated if required. Which of the tiles can be used to tile the given grid?
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Q29.If the geometric solid blocks shown below, are cut along a single flat plane, which of these can have the cross section of a regular hexagon (all sides equal)? Assume, all blocks are extruded from polygons with sides of equal length.
UCEED2019Q28·msq·Hard
Suresh, Biju and Tina bring one gift each. When they meet, they swap their gifts in such a way that no one gets back what they had brought with them. The gifts are, a book, a pen, and a ball. Suresh says: I gave my gift to the one who gave away the ball. Biju says: I received my gift from the one who gave gift to the one who gave away the ball. Tina says: I got what I always wanted. Biju says: But Tina, you had to give away your pen. Which of these statements is/are TRUE?
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