Difference between revisions of "2024 IMO Problems/Problem 1"
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is a multiple of <math>n</math>. (Note that <math>\lfloor z \rfloor</math> denotes the greatest integer less than or equal to <math>z</math>. For example, <math>\lfloor -\pi \rfloor = -4</math> and <math>\lfloor 2 \rfloor = \lfloor 2.9 \rfloor = 2</math>.) | is a multiple of <math>n</math>. (Note that <math>\lfloor z \rfloor</math> denotes the greatest integer less than or equal to <math>z</math>. For example, <math>\lfloor -\pi \rfloor = -4</math> and <math>\lfloor 2 \rfloor = \lfloor 2.9 \rfloor = 2</math>.) | ||
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+ | ==Video Solution== | ||
+ | https://www.youtube.com/watch?v=LW54i7rWkpI | ||
==Video Solution== | ==Video Solution== |
Revision as of 23:52, 26 July 2024
Determine all real numbers such that, for every positive integer
, the integer
is a multiple of . (Note that
denotes the greatest integer less than or equal to
. For example,
and
.)
Video Solution
https://www.youtube.com/watch?v=LW54i7rWkpI
Video Solution
https://www.youtube.com/watch?v=50W_ntnPX0k
Video Solution
Part 1 (analysis of why there is no irrational solution)
Part 2 (analysis of even integer solutions and why there is no non-integer rational solution)
~Steven Chen (Professor Chen Education Palace, www.professorchenedu.com)