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1
SMT 2022 Discrete Tiebreaker #1
SMT 2022 Discrete Tiebreaker #1
Source:
April 1, 2023
Problem Statement
How many
4
4
4
element subsets of
{
0
,
1
,
2
,
…
,
20
}
\{0,1,2,\dots,20\}
{
0
,
1
,
2
,
…
,
20
}
contain their sum modulo
21
21
21
?
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