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| FINDING
UNIT DIGITS OF X^N |
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Unit digits for powers of 2
Now
let’s look at the unit digits for powers of 2.
21 = 2 and the unit digit is 2
22 = 4 and the unit digit is 4
23 = 8 and the unit digit is 8
24 = 16 and the unit digit is 6
25 = 32 and the unit digit is 2
26 = 64 and the unit digit is 4
27 = 128 and the unit digit is 8
28 = 256 and the unit digit is 6
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