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The last digit is 3. If you multiply 3 repeatedly by itself, you get the last digits:3, 9, 7, 1, 3, 9, 7, 1...

In other words, every fourth power of 3 will end with the digit 1. Since any factorial starting at 4! has 4 as a factor, it follows that the last digit is 1.

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7y ago
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7y ago

It is 1.

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Q: What is the unit digit of 43 to the power of 34 factorial?
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