hatás szigetelés Visszaélés 12 balls puzzle Könnyen érthető Antipoison Diktatúra
strategy - Twelve balls and a scale - Puzzling Stack Exchange
identify heavier or lighter ball in group of 12 (part1) - YouTube
Daily Puzzles - A box contains 12 balls of three different colors. 4 each of red, yellow and blue. If you were to be blindfolded and asked to pick them at random,
Solution of the 12 balls problem | Learntofish's Blog
Riddle of the Week #25: The Pool Ball Problem
12 balls puzzle: Find one fake in 12 balls identical in 3 weighs