12th Class
Mathematics
Sample Paper
Maths Olympiad Model Test Paper-12
question_answer
If \[a\ne p,\] \[b\ne q,\]\[c\ne r\] and \[\left| \begin{matrix} p & b & c \\ a & q & c \\ a & b & r \\ \end{matrix} \right|=0,\] the value of \[\frac{p}{p-a}+\frac{q}{q-b}+\frac{r}{r-c}\] is_________.