Skip to content / Đến nội dung
ThichHocToan.com

IMSO 2016 — Mathematics — Essay Question 1

IMSO Maths · IMSO 2016 — Mathematics — Essay

Question 1

Write the numbers $1,2,3,\ldots,9$ exactly once on the circumference of a circle in such a way that no two neighboring numbers would give a sum that is divisible by either 3 or 5 or 7.

Question illustration