Math Riddles
Math riddles require that you dig into arithmetic and calculation a little bit to figure out the solution. These riddles rarely involve advanced trigonometry or calculus, but adding and multiplying is fair game.
Easy | ||
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How can you place the numbers 1 through 9 in a 3x3 grid such that ...
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Consider the following explanation for why 1=2 : 1. Start out Let y = ...
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In a bouquet of flowers, all but two are roses, all but two are tulips, ...
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Medium | ||
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There are 1 million closed school lockers in a row, labeled 1 through 1,000,000. You ...
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Using only and all the numbers 3, 3, 7, 7, along with the arithmetic operations ...
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Andy, Barry, and Carl race each other in a 100-meter dash. They each run at ...
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Five coworkers want to know what the average of all their salaries is, but refuse ...
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The King of a small country invites 1000 senators to his annual party. As gifts, ...
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Hard | ||
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Consider a 10-character string consisting of the numbers 0 through 9, with each number appearing ...
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