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IMAS 2011 — Upper Primary Grades 5–6 — Round 2 Question 12

IMAS · IMAS 2011 — Upper Primary Grades 5–6 — Round 2

Question 12

Exactly 100 sticks are used to build triangular, square and pentagonal frames. Each frame uses one stick per side, and at least one frame of every type is made. How many different total numbers of frames are possible?

Question illustration