Brain Teaser

Question Dashed arrows mean to add. If each of the seven circles contains a unique non-negative integer, how many values can the m

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Question The lower base of this trapezoid is three times as long as its upper base. The area of the yellow triangle equals 45. Wha

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Question In the pictured triangles, the angle measures are as follows:   ∠BAC=y−12° ∠ADB=x+64° ∠ABD=y+10° ∠BDC=x

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Question The product of Ivy’s, Joshua’s, Kylie’s, and Logan’s ages is 1296.   Which of these numbers

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Question Leticia is writing a test question for her math students. She wants them to find solutions to the equation x+y+z=12, wher

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Question On a school trip, Otto tries to take a selfie with the bottom of a deep well in the background, but the phone slips out o

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Question We can arrange the following instructions in six different ways: set X to X plus Y set Y to X minus Y set Z to X times Y

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Question Nikesh wants to know how much the three textbooks required for the brilliantology course will cost him. By mistake, he re

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Question A rectangular box of chocolates sits on the ground. Its base is a square of side length 4 inches, while its height is 6 i

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Question The figure shown is composed of a triangle and a trapezoid and has perimeter 18. What is its total area? 21√3 / 4 23√

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Question Out of 404 students of Brilliant Language School, 192 learn German, 162 Spanish, and 122 French. Every student learns at

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Question We want to trace the entire figure shown, using these rules: You can start at any intersection on the figure You cannot l

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