Sia

Sure! Here's a question similar to the one you provided:

Which of the following numbers does not have a square root in the form $x + y \sqrt{3}$, where $x$ and $y$ are positive integers?

1. $10 + 5 \sqrt{3}$
2. $20 + 15 \sqrt{3}$
3. $30 + 10 \sqrt{3}$
4. $50 + 25 \sqrt{3}$
5. $80 + 40 \sqrt{3}$

Try to determine which number does not fit the criteria!