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Argentina National Olympiad
1999 Argentina National Olympiad
1
1
Part of
1999 Argentina National Olympiad
Problems
(1)
x c=a+b+186
Source: Argentina 1999 OMA L3 p1
5/13/2024
Three natural numbers greater than or equal to
2
2
2
are written, not necessarily different, and from them a sequence is constructed using the following procedure: in each step, if the penultimate number written is
a
a
a
, the penultimate one is
b
b
b
and the last one is
c
c
c
, it is written
x
x
x
such that
x
ā
c
=
a
+
b
+
186.
x\cdot c=a+b+186.
x
ā
c
=
a
+
b
+
186.
Determine all the possible values of the three numbers initially written so that when the process continues indefinitely all the written numbers are natural numbers greater than or equal to
2
2
2
.
number theory
algebra