defence exam Army Havildar SAC Mock Test Series 2025 Mathematics Determinants Application of Determinants
If p ≠ a, q ≠ b, r ≠ c and the system of equations
px + ay + az = 0
bx + qy + bz = 0
cx + cy + rz = 0
has a non-trivial solution, then the value of \(\frac{p}{p-a}+\frac{q}{q-b}+\frac{r}{r-c}\) is
1
1
2
2
3
\(\frac{1}{2}\)
4
0