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IMAS 2021 — Middle Primary Grades 3–4 — Round 2 Question 3

IMAS · IMAS 2021 — Middle Primary Grades 3–4 — Round 2

Question 3

Peter will be attending a two-day summer camp, where he plans to wear different
colour of socks in both days. He keeps all of his socks in a messy non-transparent
drawer under his bed and it is known that he has 8 black socks and 6 white socks.
If he takes out 1 sock at a time, how many socks does he need to get to be sure
that he gets 2 pairs of socks of different colour?
  1. 4
  2. 6
  3. 8
  4. 10
  5. 12