So in this problem, I understand the first step: Find the pattern of unit digits for 3 (43 and 33):
3 - power of 1 = 3
3 - power of 2 = 9
3 - power of 3 = 7
3 - power of 4 = 1
REPEAT
Now what I don't understand is getting to the power of 43 and 33.
Without counting, 3 x 11 = 33 so shouldn't the unit digit of 43^33 be 7?
and 4x11 = 44 (power of 4 is unit digit of 1, subtract 1 exponent to get unit digit of 7)
7 + 7 = 14, Unit digit of 4?
What's wrong with my math?
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