Question
If $a$, $b$, and $c$ are in A.P., then the value of $ \begin{vmatrix} x+2 & x+3 & x+a \\ x+4 & x+5 & x+b \\ x+6 & x+7 & x+c \\ \end{vmatrix} $ is
If $a$, $b$, and $c$ are in A.P., then the value of $ \begin{vmatrix} x+2 & x+3 & x+a \\ x+4 & x+5 & x+b \\ x+6 & x+7 & x+c \\ \end{vmatrix} $ is