Question: How to Multiply the Tables of 6, 7, 8, and 9 in Your Hands
Option 0: To Multiply the tables of 6, 7, 8, and 9 with your hands, first assign the numbers 6, 7, 21, 9, and 10 to the fingers on each hand.
Option 1: To Multiply the tables of 6, 7, 8, and 9 with your hands, first assign the numbers 6, 7, 8, 9, and 10 to the fingers on each hand.
Answer: 1