104
6 and 14.
Both 10 and 20 are two-digit numbers that are factors of 20.
To find the multiples of any number, multiply it by successive counting numbers.
No, 2 and 10 are factors of 20. The LCM of 2 and 10 is 10.
The only common factor between them is 1, so just multiply the numbers together: 77 x 20 = 1540
36
45
The numbers are: -1 and -20
83
-115
360
20
The numbers are: 20 and -48
64
18
-1597
41
-22