Question 20
A magician places three cards on the table. Each card has a mathematical symbol on one side and a number on the other. The first arrangement shows ÷, 6, 8. He flips some or all cards and rearranges them; the second arrangement shows 6, ×, 1. What number is on the back of the card showing ×?


The English final question in the first source drops the symbol inside its quotation marks. Its Vietnamese question and worked answer identify ×, which is the target used here.


The English final question in the first source drops the symbol inside its quotation marks. Its Vietnamese question and worked answer identify ×, which is the target used here.