The image shows a 3x3 grid with some numbers, and one missing value indicated by a question mark. The numbers are as follows:

35  | 12 | 17
42  | 23 | 14
19  | 43 | ?

To determine the missing number, we need to find a pattern within the rows or columns.

Looking at the first two rows:

1. Row 1 (35, 12, 17): The sum is $35 + 12 + 17 = 64$.
2. Row 2 (42, 23, 14): The sum is $42 + 23 + 14 = 79$.

Next, look at the partial third row:

• The sum of the two known numbers is $19 + 43 = 62$.

It appears that the sum of each row may follow a pattern. The difference between the sums of the first and second rows is 15 ($79 - 64 = 15$).

To follow this progression, we could expect the sum of the third row to be 94, since the difference of 15 is being added. Therefore, the missing number $x$ should satisfy:

$19 + 43 + x = 94$

Solving for $x$:

$62 + x = 94$

$x = 94 - 62 = 32$

Thus, the missing number is 32.

Would you like further details or have any questions?

Here are five related questions to consider:

1. What would happen if the row sums followed a different pattern?
2. Can you find a column-based pattern?
3. Is there a multiplicative pattern between the rows?
4. How would the solution change if the grid was 4x4?
5. Could diagonal sums reveal any additional patterns?

Tip: Always check multiple ways (rows, columns, diagonals) to find patterns when solving number grids.