Study the given pattern carefully and select the number that can replace the question mark (?) in it.
$$\begin{array}{ccc}26& 19& 12\\ 32& ?& 16\\ 23& 20& 17\end{array}$$

Let's analyze the columns or rows to find the pattern.Looking at the rows:Row 1: $26,19,12$ $
$\frac{26+12}{2}=\frac{38}{2}=19$$Row3:$ 23, 20, 17
$23 + 17/2 = 40/2 = 20
The pattern is that the middle number is the average of the first and third numbers: $\frac{\text{First}+\text{Third}}{2}=\text{Middle}$.Applying this to Row 2: $32,?,16$ $
$\text{Middle}=\frac{32+16}{2}=\frac{48}{2}=24$ $