The sum of $2 + 4$ is $6$.

Would you like me to explain addition in more detail or solve a related problem?

Here are 5 related questions to explore further:

1. What is $6 + 3$?
2. How do you add larger numbers like $25 + 37$?
3. What is $2 + 4 \times 3$ following the order of operations?
4. How does addition work with negative numbers, such as $-2 + 4$?
5. What is the sum of $2.5 + 4.5$?

Tip: When solving addition problems, always align numbers properly if adding multi-digit numbers!