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Regional Mathematical Olympiad
1993 India Regional Mathematical Olympiad
5
Another divisible
Another divisible
Source: Indian RMO 1993 Problem 5
October 23, 2005
modular arithmetic
Problem Statement
Show that
1
9
93
ā
1
3
99
19^{93} - 13^{99}
1
9
93
ā
1
3
99
is a positive integer divisible by
162
162
162
.
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