Number theory · Decimal digits · Parity of digits · Divisibility by 3 · Minimal counterexample search
Find the smallest three-digit number with the property that every digit of its triple is even.
Sign in to check answers, open hints, read the full solution, and track your progress. Statements are always free.
Slovenian High School Mathematics Competition for Vega Awards (MaSSA), izbirno (selection) round 2008, 1. letnik, category A, problem 3. Organized by DMFA Slovenije (Society of Mathematicians, Physicists and Astronomers of Slovenia). Source