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EGMO TST - Moldova
2023 Moldova EGMO TST
11
11
Part of
2023 Moldova EGMO TST
Problems
(1)
after their greatest digit is switched to $1$ become multiples of $30$.
Source: Moldova EGMO TST 2023
2/4/2023
Find all three digit positive integers that have distinct digits and after their greatest digit is switched to
1
1
1
become multiples of
30
30
30
.
number theory