CUET Mathematics 2026 31st May Shift 2 PYQs

If the system of equation

$x - y + z = 4$

$x - 2y - 2z = 9$

$2x + y + \lambda z = 1$

has a unique solution, then

If $A$ is a $3\times 3$ matrix with $|A|=4$, then $|4A|$ is equal to :

If A and B are two square symmetric matrices of same order, then AB-BA is