4

Do you mean you’d like four practice questions? I can generate a 4-question mini-quiz on a topic of your choice (and include full solutions if you want).

Please tell me:

• Subject and level (e.g., Calculus I, Linear Algebra, Statistics, Physics)
• Whether you want full solutions or just answers
• Any specific topics you want covered (e.g., derivatives, matrix eigenvalues, probability distributions)

If you meant something else by "4" (like problem 4 from a set), paste the problem and I’ll help right away.