Quiz |
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10 Facts about Pi |
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12 x 12 Multiplication Table without Yellow Box in 45s |
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15 x 15 Multiplication Table in 4 Minutes |
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20 x 20 Multiplication Table in 5 Minutes |
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25 x 25 Multiplication Table in 8 Minutes |
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30 x 30 Multiplication Table in 12 Minutes |
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35 x 35 Multiplication Table in 18 Minutes |
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40 x 40 Multiplication Table in 25 Minutes |
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50 x 50 Multiplication Table in 50 Minutes |
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5000 Digits of Pi |
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Alphametic Quiz - Numbers-for-Letters Puzzle |
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Answers Contain the Number Twelve |
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Arithmetic Challenge Chain #1 |
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Arithmetic Challenge Chain #2 |
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Arithmetic Challenge Chain #3 |
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Random Quadratic Equations (Slower version) |
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What Type of Number are They? |
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