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last digit of $4^{3^{2019}} (HOMC 2019 JI-2)
last digit of $4^{3^{2019}} (HOMC 2019 JI-2)
Source:
November 7, 2020
number theory
last digits
Digit
Problem Statement
What is the last digit of
4
3
2019
4^{3^{2019}}
4
3
2019
?A.
0
0
0
B.
2
2
2
C.
4
4
4
D.
6
6
6
E.
8
8
8
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