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Gaokao Math Practice Question

将 5 名北京冬奥会志愿者分配到花样滑冰, 短道速滑、冰球和冰壶 4 个项目进行培训, 每名 志愿者只分配到1个项目, 每个项目至少分配1名志愿者, 则不同的分配方案共有 ($\qquad$)

  1. A.$60$ 种
  2. B.$120$ 种
  3. C.$240$ 种
  4. D.$480$ 种

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