What is the ones digit of $$\(19^{2020}\)$$ ?

A.
9
B.
7
C.
3
D.
1
Mathematics
Competition
Math League
Exam No:2020 First Round Grade 7 Year:2020 Question No:9

Answer:

D

Knowledge points:

G7 - Number Theory - Cyclicity (Unit Digits)

Solution:

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