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IKMC 2020 - Grades 11-12 - Set 2 - Self-study Question 16

IKMC · IKMC 2020 - Grades 11-12 - Set 2 - Self-study

Question 16

Matjaz places 15 numbers on a wheel. Only the top number, 10, is visible. Any seven consecutive positions always have the same sum, as in the shaded example. How many of 75, 216, 365 and 2020 can be the total of all 15 numbers?

Question illustration
  1. Zero
  2. One
  3. Two
  4. Three
  5. Four