MathDB

(013) 3

Part of 1981 Tournament Of Towns

Problems(1)

TOT 013 1981 Spring S3 every pos. real sum of 9 no with decimal by digits 0,7

Source:

8/17/2019
Prove that every real positive number may be represented as a sum of nine numbers whose decimal representation consists of the digits 00 and 77.
(E Turkevich)
number theorydecimal representationSum