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Problems
Contests
National and Regional Contests
India Contests
India Pre-Regional Mathematical Olympiad
2016 India PRMO
15
15
Part of
2016 India PRMO
Problems
(1)
2016 preRMO p15, least common multiple of m and n equals 600
Source:
8/9/2019
Find the number of pairs of positive integers
(
m
;
n
)
(m; n)
(
m
;
n
)
, with
m
≤
n
m \le n
m
≤
n
, such that the ‘least common multiple’ (LCM) of
m
m
m
and
n
n
n
equals
600
600
600
.
LCM
least common multiple
number theory