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2020 BMT Fall
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2020 BMT Individual 20
Source:
January 9, 2022
number theory
Problem Statement
Compute the number of positive integers
n
≤
1890
n \le 1890
n
≤
1890
such that n leaves an odd remainder when divided by all of
2
,
3
,
5
2, 3, 5
2
,
3
,
5
, and
7
7
7
.
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