It looks like you're trying to define a set \( S \) consisting of all integers \( x \) that satisfy a certain condition involving numbers. However, the condition you've written, "10 x 30", is unclear.
If you are referring to a set of integers \( x \) such that \( 10 < x < 30 \), then the set \( S \) can be expressed as:
\[ S = { x \in \mathbb{Z} \mid 10 < x < 30 } \]
This means that \( S \) includes all integers \( x \) that are greater than 10 and less than 30.
To list the integers in this set, we have:
\[ S = {11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29} \]
Let me know if you meant a different condition or if you need additional information!