Practicing Success
If A, B and C are three singular matrices given by $A=\left[\begin{array}{cc}1 & 4 \\ 3 & 2 a\end{array}\right], \quad B=\left[\begin{array}{cc}3 b & 5 \\ a & 2\end{array}\right]$ and $C=\left[\begin{array}{cc}a+b+c & c+1 \\ a+c & c\end{array}\right]$, then the value of $a b c$ is: |
15 30 45 90 |
45 |
The correct answer is Option (3) → 45 |