The greatest common divisor of two numbers is 1 and the least common multiple is 323. These two numbers are (), () or (), ()

17 19
323 1

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1. The greatest common factor of two numbers is 1, and the least common multiple is 323. These two numbers are () and () or（ The greatest common factor of two numbers is 1, and the least common multiple is 323. These two numbers are () and () or () and ()
2. The greatest common divisor of AB is 12, the least common multiple is 72, a = 36, B =?
3. It is known that the greatest common divisor of AB is 12, the least common multiple is 72, a = 36, B =?
4. The greatest common factor of two one digit numbers is 1, and the least common multiple is 63. These two numbers are______ And______ ．
5. Least common multiple and greatest common factor 45 apples and 37 pears were equally divided into a group of students. As a result, three apples were missing and one pear was left?
6. The greatest common factor must be the least common multiple? The least common multiple must be the greatest common factor?
7. Finding the greatest common factor and the least common multiple
8. The minimum common multiple and maximum common factor of 20 and 36, 19 and 13, 13 and 21, 30 and 60 are required
9. The characteristics of greatest common factor and least common multiple!
10. The greatest common factor of the two numbers is 9, and the least common multiple is 243______ And______ ．
11. The least common multiple of two numbers is 36, and the greatest common divisor is 3. What are the two numbers
12. The greatest common divisor of two numbers is 12, the least common multiple is 120, the difference between the two numbers is 36, how many are the two numbers?
13. The greatest common divisor of two numbers is 12 and the least common multiple is 72. If one of them is 36, what is the other number?
14. The greatest common divisor of two positive integers is 7 and the least common multiple is 105
15. There are two numbers whose greatest common divisor is 7 and the least common multiple is 21. These two numbers are
16. The greatest common divisor of two positive integers is 7 and the least common multiple is 105
17. Cable stayed bridge and suspension bridge are two important structures. What are the similarities and differences of their basic stress principles? Which type
18. 580 primary school teachers and students rent cars, a total of 12 cars, 60 people for each car, 25 people for each car, just full. How many cars for each car? Urgent
19. From city a to city B, it takes five hours for trucks and six hours for buses. What is the simplest ratio between the speed of trucks and that of buses______ The time ratio is______ ．
20. Xiaoming and Xiaojun went to buy greeting cards. Xiaojun bought 2.5 times as many as Xiaoming. After Xiaoming bought another 15 cards, the two bought the same number of cards. How much did each buy Why use 2.5-1?