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?


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