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MissPhiladelphia
To describe the pattern, maybe it would be helpful to find the difference between terms. We do as follows:

30 - 20 =  10
20 - 12 =   8
12 - 6   =   6
6 - 2     =   4

As we can see the pattern's difference is a factor of two. The differences are divisible by 2. Hope this helps. Have a nice day.
XxUwUxXCaT

Answer:each time they add 2 to what they are adding so the next one is 42

Explanation:

If confuse here

If 2 went to 6 then 6 went to 12

2 got add 4 the 6 got add 6 so that mean each time it gets 2 more so the 12 gets 8 and so on and so on!

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