\[\left| \,\begin{matrix} a-b & b-c & c-a \\ x-y & y-z & z-x \\ p-q & q-r & r-p \\ \end{matrix}\, \right|=\] [MNR 1987]

\[\left| \,\begin{matrix} a-b & b-c & c-a \\ x-y & y-z & z

1.	\[\left\| \,\begin{matrix} a-b & b-c & c-a \\ x-y & y-z & z-x \\ p-q & q-r & r-p \\ \end{matrix}\, \right\|=\] [MNR 1987]
A.	\[a(x+y+z)+b(p+q+r)+c\]
B.	0
C.	\[abc+xyz+pqr\]
D.	None of these
Answer» C. \[abc+xyz+pqr\]

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\[\left| \,\begin{matrix} a-b & b-c & c-a \\ x-y & y-z & z-x \\ p-q & q-r & r-p \\ \end{matrix}\, \right|=\] [MNR 1987]

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