Discussion
What is the unit digit of \(2^{10}\)?
Answer: B
The power cycle of the unit digit of 2 is (2, 4, 8, 6), which has a length of 4. To find the unit digit of \(2^{10}\), we find the remainder of the power when divided by the cycle length: \(10 \div 4\) gives a remainder of 2. The required unit digit is the 2nd in the cycle, which is 4.
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