Answer: weigh three first, then take one, and then calculate the difference after weighing.
2. Someone walked 32 kilometers north and then 36 kilometers south, and asked which of the following might be correct.
He is 4 kilometers away from the starting point. He is more than 48 kilometers away from the starting point. He is 68 kilometers away from the starting point. He is less than 4 kilometers away from the starting point. He is more than 4 kilometers away from the starting point, but less than 68 kilometers away.
A: 1, 3, 5
Every page of Xiao Ming's diary is marked with numbers. He uses the number ***98 1 from 0 to 9. How many pages does this diary have?
A: 357
Xiaohua took part in the motorcycle race, and the number of participants was as large as the number of participants. Any two athletes meet only in one game, and four people appear in each game. He asked * * * how many people attended.
A: 13
5. There are nine numbers (1~9) to form two numbers (each number is used only once). What is the biggest digital product?
Answer: 9642 8753 1