Question 3
The 12 people at a party are 6 couples. Each man shakes hands with everyone else except his own wife. No two women shake hands with each other. What is the total number of handshakes among these 12 people?
IMAS 2011 — Upper Primary Grades 5–6 — Round 2 Question 3
IMAS · IMAS 2011 — Upper Primary Grades 5–6 — Round 2