The Shortlisted Problems should be kept strictly confidential until IMO The Organizing Committee and the Problem Selection Committee of IMO ∗. ShortListed Problems of the years to were the same, so I just added. International Competitions IMO Shortlist 17 – Download as PDF File .pdf), Text File .txt) or read online. IMO Shortlist.

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The sum of digits for k is n and the number k 2 has sum of digits n2.

Prove that 5 divides x. All except very few of these problems have been posted by Orlando Doehring orl. Comment by Stephen94 — September 6, This site uses cookies.

### IMO Shortlist G6 – BdMO Online Forum

Notify me of new comments via email. In the coordinate plane, eight distinct points with integer coordinates lie on a circle with diameter of length pn. When he ascends, each step he takes covers a rungs of the ladder, and when he descends, each step he takes covers b rungs of the ladder, where a and b are fixed positive integers. Comment by Vo — October 9, 5: Show that 2p1 p IMO ShortlistNumber Theory Problem 6 Let a, b, c be positive integers such that a and b are relatively prime and c is relatively prime either shortilst a or b.

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Tournament of Kmo SpringJunior O-Level, Problem 4 Each term of a sequence of positive integers is obtained from the previous term by adding to it its largest digit. Are there the IMO longlist problems besides the ones in http: IMO ShortListProblem 13 An eccentric mathematician has a ladder with n rungs that he always ascends and descends in the following way: Email required Address never made public.

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RSS feed for comments on this post. In their decimal representations, the last three digits of m are equal, respectively, so the last three digits of n. Notify me of new posts via email. Prove that there exists a shogtlist triangle the measure of whose sides in some unit are short,ist and whose area measure is ab square units. By a sequence of ascending and descending steps he can climb from ground level to the top rung of the ladder and come back down to ground level again.

Prove that the equation n!

## BdMO Online Forum

Among k arbitrary integers a1a2. Show that the representation of the number a in the base b contains at least n digits different from zero.

A few words about writing…. Contents 1 Problems 1 1.

Han on The mean curvature under confo…. Prove that a, b, c have a common divisor greater than 1. To find out more, including how to control cookies, see here: Fill in your details below or click an icon to log in: Determine all positive integers n with the property: You do not have the shortlists forcompetition recently completed.

Log In Sign Up. Thanks Stephen94 in advance, I have updated the page with your information.