Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2020 — Math Olympiad Vault — Part 02 Question 40

Math Olympiad Vault · MathNet 2020 — Math Olympiad Vault — Part 02

Question 40

Given a tuple of consecutive positive integers, one forms all pairs of members of it such that the first member is less than the second member. The percentage of these pairs where the second member is divisible by the first one is called the *degree of divisibility* of the tuple. For every integer $n \gt 1$, denote the largest possible degree of divisibility of a tuple of $n$ consecutive positive integers by $j(n)$.
Does there exist an integer $n \gt 1$ such that $j(n + 1) \gt j(n)$?