64
4*2=8
8*2=16
16*2=32
so, 32*2=64
128-256
It appears as if the pattern is doubling, therefore the next three numbers are 16, 32, and 64.
The differences between the numbers is decreasing by 8 each time. Therefore, since the difference between 48 and 32 is 16, the difference between the next two numbers will be 16 - 8 = 8. Therefore, the next number in the sequence is equal to 32 - 8 = 24.
32
It took us from 5PM one day until 8PM the next to fill our pool. So, about 27 hours.
16 doesn't have a GCF. You need at least two numbers to find one of those. If you're asking what three numbers equal 16, there are an infinite number of possibilities. If you're asking what three numbers have a GCF of 16, 16, 32 and 48 is one answer.
32 and 48
The GCF of 16 and 32 is 16.
16 and 32, among others.
16 and 32
16 and 32
16, 32 and 48