The result of $2 + 2$ is $4$.

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Here are 5 related questions to explore:

1. What is $2 + 3?$
2. What is $4 + 5?$
3. How do you solve $2 + x = 4?$
4. What is the sum of $2 + 2 + 2?$
5. What is the difference between $4 - 2?$

Tip: In mathematics, addition is one of the basic arithmetic operations and is commutative, meaning $a + b = b + a$.