Difference between revisions of "2019 CIME I Problems/Problem 11"

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We define a positive integer to be <i>multiplicative<\i> if it can be written as the sum of three distinct positive integers <math>x, y, z</math> such that <math>y</math> is a multiple of <math>x</math> and <math>z</math> is a multiple of <math>y</math>. Find the sum of all the positive integers which are not <math><i>multiplicative<\i></math>.
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We define a positive integer to be <math>multiplicative</math> if it can be written as the sum of three distinct positive integers <math>x, y, z</math> such that <math>y</math> is a multiple of <math>x</math> and <math>z</math> is a multiple of <math>y</math>. Find the sum of all the positive integers which are not <math>multiplicative</math>.
  
 
=Solution 1=
 
=Solution 1=

Revision as of 16:46, 3 October 2020

We define a positive integer to be $multiplicative$ if it can be written as the sum of three distinct positive integers $x, y, z$ such that $y$ is a multiple of $x$ and $z$ is a multiple of $y$. Find the sum of all the positive integers which are not $multiplicative$.

Solution 1

We don't know yet.

See also

2019 CIME I (ProblemsAnswer KeyResources)
Preceded by
Problem 10
Followed by
Problem 12
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
All CIME Problems and Solutions

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