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Problems
Contests
National and Regional Contests
The Philippines Contests
Philippine MO
2013 Philippine MO
1
1
Part of
2013 Philippine MO
Problems
(1)
PMO Finals #1
Source:
2/3/2013
1. Determine, with proof, the least positive integer
n
n
n
for which there exist
n
n
n
distinct positive integers,
(
1
−
1
x
1
)
(
1
−
1
x
2
)
.
.
.
.
.
.
(
1
−
1
x
n
)
=
15
2013
\left(1-\frac{1}{x_1}\right)\left(1-\frac{1}{x_2}\right)......\left(1-\frac{1}{x_n}\right)=\frac{15}{2013}
(
1
−
x
1
1
)
(
1
−
x
2
1
)
......
(
1
−
x
n
1
)
=
2013
15