Yes.
The multiples of 2 and 24 include any multiple of 24. The multiples of 22 and 4 include any multiple of 44.
Any multiple of 16 will work, since those are also multiples of 2 and 8.
True.
Any multiple of 10 is also a multiple of 2.
Half of them. Any number that is a multiple of 6 is also a multiple of 3 and 2.
Halfway between any two multiples of 10 is indeed a multiple of five because the average of two multiples of 10 will always yield a result that is a multiple of 10. For example, the halfway point between 20 and 30 is 25, which is a multiple of five. More generally, since multiples of 10 can be expressed as (10n) and (10m), their average ((10n + 10m)/2) simplifies to (5(n + m)), confirming that the result is a multiple of five.
Any multiple of 10.
Any multiple of 14.
Any multiple of 6.
Any multiple of 30.
No.
Common multiples of 100 and 2 include any multiple of 100.