As Dudeney shows in the illustration here, it is easy to use four 5s to create a sum that equals 100. He then points out that four 9s would also be fairly easy to do, in the form of 99 + 9/9. Achieving it with…
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This artwork was my 2nd grade art fair project. I think it is good to write about this because it taught me a good lesson on how art and math come together. My mom found a website that had lot of cool art pieces by Frank…
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This puzzle is an early example of balancing scales using abstract quantities, a visual representation of simple algebra. Given that the top two scales are in perfect balance, how many marbles are required to balance the bottom scales?
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