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> Logic> Probability (1)> Shapes> General
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> Just Math (2)> Science> Algorithms
A Champagnat number is equal to the sum of all the digits in a set of consecutive positive integers, one of which is the number itself.
Thus, 42 is a Champagnat number, since 42 is the sum of all of the digits of 39, 40, 41, 42, 43, 44.

Prove that there exist infinitely many Champagnat numbers.
(No Solution Yet, 2 Comments) Submitted on 2018-01-23 by Ady TZIDON   
Difficulty: 2 of 5 Bonus: Circular Logic (in Shapes) Rating: 1.63
A name which has nothing to do with this question (well almost nothing)

What percentage of the circle is shaded? (The quadrangle shown in the picture is a square with one of the vertices in the circle's center.)

(Solution Posted, 26 Comments) Submitted on 2002-07-03 by qball   
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