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IMAS 2021 — Middle Primary Grades 3–4 — Round 1 Question 9

IMAS · IMAS 2021 — Middle Primary Grades 3–4 — Round 1

Question 9

Peter keeps all of his socks in a messy non-transparent drawer under his bed. He has 8 black socks and 6 white socks. He takes the socks out from the box, one sock at a time. How many attempts does he need to make sure that he gets 2 socks of the same colour? (Note: There is no difference between a left and a right sock.)
  1. 2
  2. 3
  3. 4
  4. 7
  5. 9