BEBRAS 2018 Grade 9-10 Round 2 Ext Question 1

Bruce and Beatrix make a bead string. Bruce gives coded instructions and Beatrix adds beads: OFF (TẮT) means BLACK (ĐEN), and ON (MỞ) means WHITE (TRẮNG). The original table says “Bruce says” and “Beatrix adds colored beads to a string.”





Bruce repeats “ON OFF OFF ON OFF OFF ON OFF” until the string is full. Which illustrated section cannot belong to this string?