# OCME · 知識與練習查找

302 MKO / 1,441 families / 360 batches / 36,000 questions.

36,000 second-context math/bilingual reviewed; 0 display/symbol-checked candidates. Source questions: candidate. English: ai_candidate. No new proof, Lean, SREG or training.

1 results; page 1/1.

## 第 34197 題：有序不重複選取

- ID: `q-20260930-r06-permutation-exact-count-0022`; number: 34197
- Processing: second_context_reviewed
- MKO: [mko-permutation-combination](/zh-Hant/mko/mko-permutation-combination/)
- Family: [qf-permutation-exact-count](/zh-Hant/explore/?family=qf-permutation-exact-count)
- Batch: [batch-20260930-r06-permutation-combination-foundations](/zh-Hant/explore/?batch=batch-20260930-r06-permutation-combination-foundations)
- [Derivation](/zh-Hant/questions/q-20260930-r06-permutation-exact-count-0022/) / [Markdown](/zh-Hant/questions/q-20260930-r06-permutation-exact-count-0022/index.md) / [JSON](/data/question-derivations/questions/q-20260930-r06-permutation-exact-count-0022.json)