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AIMO 2021 Secondary 3 — Preliminary (Open Trial 1) Question 12

AIMO · AIMO 2021 Secondary 3 — Preliminary (Open Trial 1)

Question 12

Six people are selected uniformly at random from 10 boys and 8 girls. What is the probability of choosing three boys and three girls?
  1. $225/77$
  2. $80/221$
  3. 5400
  4. $450/1547$