What is the sum of the first two numbers in the series: 4, 12, 6, 9?

To find the sum of the first two numbers in the series 4, 12, 6, 9, you need to add the two numbers together. The first number is 4 and the second number is 12. When you add these two numbers, you perform the calculation 4 + 12, which equals 16.

This sum represents the total when combining those initial elements of the series. It's important to focus on the specific numbers requested (the first two) to avoid any confusion with the other elements in the series. Thus, the correct answer is 16.