Canonical URI: https://w3id.org/kmath/textbook_solution/donga_solution_body_p116_example_01
| rdf:type | math:TextbookSolution |
|---|---|
| rdfs:label | 동아 p116 예제 1 풀이 |
| rdfs:comment | 동아 공통수학1 본문 p116의 예제 1 풀이. |
| math:answerText | \({}_nC_r={}_nC_{n-r}\) |
| math:explanationText | \[ {}_nC_{n-r} =\frac{n!}{(n-r)!(n-(n-r))!} =\frac{n!}{(n-r)!r!} ={}_nC_r \] 따라서 \({}_nC_r={}_nC_{n-r}\)이 성립한다. |
| math:mappingConfidence | 1.0 |
| math:pageStart | 116 |
| math:problem | textbook_problem:donga_vision_p116_example_01 |
| math:reviewStatus | reviewed |
| math:solutionKind | worked_solution |
| math:usesSolutionPattern | solution_pattern:combination_symmetry |