2.3 Three people use it for three days and nine people use it for nine days. How many buckets of water are there?
It takes three minutes for three children to eat three cakes, and how long does it take for ninety children to eat ninety cakes?
4. How to make the equation X+I=IX hold in the simplest way?
5. It costs 2 14 yuan 56 points to buy a pair of high-grade women's leather shoes. How much does it cost to buy one?
6. There are three children guessing boxing. One for scissors, one for stone and one for cloth. How many fingers do these three people have?
7. What wastes one-third of a person's life?
8. Can a ruler with a length of 1 1 cm be used to measure the length of any article with an integer cm between 1 and1cm? If possible, which scales should be engraved?
9. In the exam, Xiaohua rolled the dice to decide the answer, but there were 20 questions. Why did he throw it 40 times?
10. It takes 30 seconds for the wall clock to strike six times. 12 for how many seconds?
When is 1 1.4-3=5?
12. Aunt Wang has three sons, each of whom has a sister and a younger sister. How many children does Aunt Wang have?
13. There are six oranges in the plastic bag. How to divide the three children, and there are two oranges in the plastic bag? (Don't separate oranges)
14.8 number "8", how to make it equal to 1000?
15. When is four minus one equal to five?