80 is the only one.
80 and 100
There is only one. It is 70.
The multiples of 16 are 16, 32, 48, 64, 80, etc. The multiples of 20 are 20, 40, 60, 80, 100, etc. The common multiples of 16 and 20 are 80, 160, 240 and so on.
10 20 30 40 50 60 70 80 90 100
72
81,84,87,90
81, 84, 87.
81, 84, 87.
81, 84, 87
The multiples of 10 that are less than 125 are 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, and 120.
The prime numbers that are greater than 80 and less than 100 are 83, 89, and 97.
Numbers that are divisible by 80 are itself and any of its other multiples
There are 2 prime numbers between 80 and 90: 83 89
81 84 87
81, 84 and 87. And 90 if you want to count that
71, 73, and 79 are the only prime numbers between 70 and 80.