The result of $1 + 2$ is:

$1 + 2 = 3$

Would you like further details or have any questions?

Here are 5 related questions to expand on this:

1. What is $3 + 5$?
2. Can you find the result of $10 - 7$?
3. What happens when you add $4 + 6$?
4. What is $8 + 2$?
5. Can you add $15 + 3$?

Tip: When adding numbers, you are finding their total sum by combining their values.