Brain Teaser

Question The 3 puzzle pieces shown fit into the 4 x 4 grid without reflection or rotation. You have these clues: G touches M (they

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Question Which of these two lattice triangles has the larger area? A has the larger area. B has the larger area. A and B have the

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Question Pete and Dave are neighbors. They use identical bricks to build fences around their square-shaped yards. Pete uses 1,000

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Question You’re driving at a speed of 10 m/s toward a traffic light 60 m away when it turns yellow. It will turn red in 5 s,

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Question The four triangles’ areas are labeled. There are two rectangles in the figure, and every triangle side length is an

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Question In a circus, acrobats use a teeterboard to catapult each other into the air, performing somersaults and twists before lan

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Question A 21×34 rectangle with semicircles joined to each side is inscribed in a circle. Which area is larger? The area of the r

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Question The six smaller rectangles are labeled by their areas, and they all have integer sides. Which of the following could be t

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Question The people of the nation Brilliantia are trying to find the length of their coastline. Unfortunately, their coast is jagg

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Question Dashed arrows mean addition, solid arrows mean multiplication, and the circles must be filled with integers.   Which

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Question Each shape in this puzzle represents a numerical value. The number next to each row or column represents the sum of all o

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Question Sara’s little brother broke her favorite fan and now it’s a bit deformed.   The angles AFB and BFC are e

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