A and B are coprime, and their greatest common divisor is? And their least common multiple is?

A and B are coprime, and their greatest common divisor is? And their least common multiple is?

one
aB

Are 6 and 9, 4 and 10, 8 and 10 coprime? Or what? What is their least common multiple

No
18 20 40

There are four numbers of a, B, C, D. It is known that the least common multiple of a and B is 120, and the small common multiple of C and D is 160. What is the least common multiple of these four numbers?

Then the least common multiple of the four numbers is (480)
According to the operation rules of short division, you only need to make a short of 120 and 160
The result is that all the numbers are multiplied to get 480