Brain Teaser
Question What weight on which side will balance the bottom scale shown? 1 kg on the left-hand side 1 kg on the right-hand s
SolveQuestion Which of the numbers below can’t you get by changing some of the + to -? 2 + 4 + 6 + 8 = 20 -8 0 6 8
SolveQuestion After a square is placed on the third scale, which side of the scale is heavier? The left side The right side The
SolveQuestion In New Math City (NMC), streets follow a square grid with integer coordinates, and all distances are measured in terms of
SolveQuestion Which side of the last scale is heavier? The left-hand side The right-hand side The scale is balanced We don’
SolveQuestion Rekha connected three identical bulbs and a battery as in the picture. How can Rekha increase the total brightness
SolveQuestion Some railroad tracks are made of 20-meter-long metal rails bolted together by metal plates. The quintessential “cli
SolveQuestion In circle puzzles, dashed arrows indicate addition while solid arrows indicate multiplication. Which number will replace
SolveQuestion In the following two puzzles, you can change some of the addition signs to subtraction, multiplication, division, and con
SolveQuestion A fair die with 20 faces has each side labeled with a number from 1 through 10, with some labels appearing multiple times
SolveQuestion You’ve just met Maria and Nuria, sisters of your friend Daria. You can’t remember if either of them lives wit
SolveQuestion In the triangle shown, what is x? 30° 31° 32° 33°
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