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Hudson Parisian

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βˆ™ 3y ago
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βˆ™ 14y ago

You are basically talking about 3-digit numbers there. There are 90. This is because there are 9 options for the first digit, and 10 options for the second digit. The third digit is not analyzed separately, because it has to be equal to the first digit.

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βˆ™ 12y ago

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Q: How many palindromes are there between 100 1000?
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