They are members of the set of numbers of the form 28*k where k = 1, 2, 3, 4 or 5.
28, 56, 84, 112, 140.
This will be difficult to answer accurately without knowing each set of numbers.
6,12,18,26 they are the first four multiples of six
The first multiples of 15 are 15, 30, 45, 60, 75, and so on. The first multiples of 4 are 4, 8, 12, 16, 20, and so forth. Multiples are numbers that can be divided evenly by another number.
To find numbers that are multiples of both 3 and 5, we need to find the numbers that are common multiples of both 3 and 5. These are numbers that are divisible by the least common multiple of 3 and 5, which is 15. The first four numbers less than 70 that are multiples of both 3 and 5 are 15, 30, 45, and 60.
The four multiples of seven are 7, 14, 21, and 28.
For multiples of four, you can get the first two last numbers (ex. 152, the 52 part), and divide it by 4. If it does, it can be divided.
Multiply 8 by the first four counting numbers. 8, 16, 24, 32
693, 924.
67 of them.
The first four are; 4,8,12,16