Incorrect.
Instead they are factors of I, 3 and 9.
They are all multiples of 9. Their common multiples are 405, 810, 1215 and so on.
9, 18, 27, 36, 45
1, 3 and 9 are common factors of 27, 45 and 81. 27, 45 and 81 are multiples of 1, 3 and 9.
No 50 does not
There is an infinite number of common multiples for 15 and 27. A common multiple of any two numbers is any number into which each of two or more numbers can be divided evenly (zero remainder).
The numbers are: 27 30 33 36 39 42 and 45
Multiples are formed by multiplying a number by successive counting numbers. The multiples of 9 are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 and so on.
45, and all of its multiples
They are multiples of 1, 3 and 9.
Common multiples include any multiple of 405.
The numbers, 18, 27, 36, 45, 54, and 63 are all multiples of nine, x2, x3, x4, x5, and x6 respectively.
They are: 9 18 27 36 45 54 and 63