Difference between revisions of "2022 SSMO Speed Round Problems/Problem 8"
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| + | ==Problem== | ||
| + | How many positive integers cannot be written as <math>7a + 19b + 28c</math>, where <math>a</math>, <math>b</math>, and <math>c</math> are positive integers (not necessarily distinct)? | ||
| + | |||
| + | ==Solution== | ||
Latest revision as of 19:14, 2 May 2025
Problem
How many positive integers cannot be written as 
, where 
, 
, and 
are positive integers (not necessarily distinct)?
