In the image, we are dealing with a partially filled Magic Square. A magic square is a grid of numbers in which the sum of the numbers in each row, column, and diagonal is the same.

Let's first determine the magic sum, which is the sum of numbers in any row, column, or diagonal. From the image, the numbers that are already filled are:

5   8   16
1   4   7
11  16  18

We know that in a magic square, each row, column, and diagonal must add up to the same total. First, let's check the sum of the third row:

$11 + 16 + 18 = 45$

So, the magic constant (sum) for every row, column, and diagonal is 45.

Now, let's fill in the blanks. The missing entries are located in the first column (top left and middle row), second column (bottom row), and third column (middle row).

1. Top-left blank (1st row, 1st column): The sum of the first row should be 45, and two numbers (5 and 16) are already given. So: $x + 5 + 16 = 45 \quad \Rightarrow \quad x = 45 - 21 = 24$ So, the top-left number is 24.

2. Middle row, 3rd column: For the second row, the sum should also be 45. We already have 1 and 4, so: $1 + 4 + x = 45 \quad \Rightarrow \quad x = 45 - 5 = 40$ The missing number is 40.

3. Bottom row, 2nd column: The sum of the third row should again be 45. We already have 11 and 18, so: $11 + x + 18 = 45 \quad \Rightarrow \quad x = 45 - 29 = 16$ The missing number is 16, but since 16 is already present in the first row, there is likely an error in the problem setup. Normally, in a magic square, no number should repeat.

It seems that this square may not be a standard magic square as it has repeating numbers. Would you like me to explore further or clarify any part of the process?

Let me know if you'd like more details, or I can suggest related questions! Here's a set of follow-up questions:

1. How do you calculate the magic constant for a 3x3 square?
2. What are some other properties of magic squares?
3. Can a magic square have negative or zero entries?
4. How can you construct a 3x3 magic square from scratch?
5. Why is repetition of numbers typically avoided in magic squares?

Tip: In any magic square, make sure that all numbers are unique unless specifically allowed by the rules.