Calculate the Average: Finding Mean of 1, 2, and 33

To solve this problem, we will calculate the average of the numbers 1, 2, and 33 using the arithmetic mean formula.

The steps to find the average are as follows:

• Step 1: Calculate the sum of the numbers: $1 + 2 + 33 = 36$.
• Step 2: Count the number of terms: There are 3 terms.
• Step 3: Find the average by dividing the sum by the number of terms: $\frac{36}{3} = 12$.

Therefore, the average of the numbers 1, 2, and 33 is $12$.

This corresponds to choice 4 in the provided options.

Thus, the solution to the problem is $12$.