$2 + 2 = 4$

Would you like more details or have any questions?

Here are some related questions you might find interesting:

1. What is $3 + 3$?
2. How do you add two numbers together?
3. What is the sum of $4 + 5$?
4. Can you explain how addition works?
5. What is $10 + 15$?

Tip: Addition is a fundamental arithmetic operation where two or more numbers are combined to get a sum.