What are we learning ?
Competency in Focus: Combinatorics
This problem is based on Combinatorics from American Mathematics contest (AMC 10A, 2019). It includes arrangement of \(n\) items out of which \(r\) items are similar.
First look at the knowledge graph.
Next understand the problem
Source of the problem
Challenges and Thrills in Pre College Mathematics Excursion Of Mathematics
Start with hints
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