Difference between revisions of "2009 UNCO Math Contest II Problems/Problem 1"

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== See also ==
 
== See also ==
{{UNC Math Contest box|year=2009|n=II|before=First Question|num-a=2}}
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{{UNCO Math Contest box|year=2009|n=II|before=First Question|num-a=2}}
  
 
[[Category:Introductory Algebra Problems]]
 
[[Category:Introductory Algebra Problems]]

Revision as of 21:27, 19 October 2014

Problem

How many positive $3$-digit numbers $abc$ are there such that $a+b=c$ For example, $202$ and $178$ have this property but $245$ and $317$ do not.


Solution

See also

2009 UNCO Math Contest II (ProblemsAnswer KeyResources)
Preceded by
First Question
Followed by
Problem 2
1 2 3 4 5 6 7 8 9 10
All UNCO Math Contest Problems and Solutions
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