1
There are none, they are prime numbers.
44, 88, 132 and so on.
77
77, 154, 231 and so on.
77
Since 14 is a multiple of 7, all of its multiples are common.
The least common multiples of 7 and 14 are 14,28 and 42>
Multiples of 7 include 7, 14, 21, 28 and so on. For them to be common, they need to be compared to another set of multiples.
There is an infinite number of common multiples for these numbers!
385
154
The common multiples of 3 and 7 are 21, 42, 63 and so on.