Two gears in a system rotate in opposite directions. What happens when you add another gear?
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There are lots of ways to add to nine, but is it possible to make it happen twice in this puzzle?
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Even without knowing the measure of any one angle, we can sometimes find relationships between them. What are these angles?
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When static friction fails, how many books will land on your hand?
Series 4 of 4
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Mathematics is the art of reasoning about patterns, and not all patterns are numerical. What completes this pattern?
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Sometimes, extending sides and breaking up overlapping shapes can help us see more than what we were told.
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In a Number Bunchers puzzle, you might need to consider multiple constraints at once. How are these tiles distributed?
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