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Divisibility by 3 in base 4 - Iran First Round 2018, P3
Divisibility by 3 in base 4 - Iran First Round 2018, P3
Source:
March 6, 2021
number theory
divisibility tests
Problem Statement
How many
8
8
8
-digit numbers in base
4
4
4
formed of the digits
1
,
2
,
3
1,2, 3
1
,
2
,
3
are divisible by
3
3
3
?
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