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2018 CHMMC (Fall)
8
2018 Fall Team #8
2018 Fall Team #8
Source:
April 17, 2022
number theory
Problem Statement
Find the largest positive integer
n
n
n
that cannot be written as
n
=
20
a
+
28
b
+
35
c
n = 20a + 28b + 35c
n
=
20
a
+
28
b
+
35
c
for nonnegative integers
a
,
b
a, b
a
,
b
, and
c
c
c
.
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