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, 2006

Combinatorics Difficulty 2.0 Junior Find the answer Canada

Bethany, Chun, Dominic, and Emily go to the movies. They choose a row with four consecutive empty seats. If Dominic and Emily must sit beside each other, in how many different ways can the four friends sit?

(A) $6$ (B) $5$ (C) $12$ (D) $30$ (E) $3$

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.