The Units Digit of Powers of a Number
Part 1. Find the units digits for powers of 2 from 20 to 210. Do you notice any pattern? Try to see if there are similar patterns when you do the same for the powers of other numbers.
Part 2. Find the units digits for powers of 12 and compare those to the units digits of powers of 2.
Part 3. Using the results of parts 1 and 2, figure out the units digit of 20022003.
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