The real part of the complex number $$3 + 5i$$ is ________.

Question Analysis
This question tests the student's understanding of the definition of a complex number and their ability to identify the real part of a given complex number.

Key Concept Explanation
A complex number is expressed as , where is the real part and is the imaginary part. The imaginary unit has the property that .

Step-by-step Solution
1. Identify the given complex number: