CUET Mathematics - If A=bmatrix1&1&1\\1&0&2\\3&1&1bmatrix and B=bmatrix-2&0&2\\5&-2&-1\\1&2&-1bmatrix such that AB=4I (where I is identity matrix) then solution of system of equations x+y+z=6, x+2z=7, 3x+y+z=12 is | PYQs + Solutions

CUET Mathematics 2026 29th May Shift 2

Algebra

Medium

core

x=1,y=2,z=3

x=2,y=3,z=1

x=3,y=1,z=2

x=3,y=2,z=1

✅ Correct Option: 3

Related questions:

30 May Shift 1

Assume $P$ , $Q$ , $R$ and $W$ are matrices of order $3 \times 3$ , $a \times 4$ , $b \times c$ and $d \times a$ respectively. If $PQ + WR$ is well defined, then the value of $ab + cd$ is:

13 May Shift 2

Match List-I with List-II

List-I	List-II
(Matrix)	(Determinant)
(A) $\begin{bmatrix} 1 & 7 \\ -3 & 5 \end{bmatrix}$	(I) 24
(B) $\begin{bmatrix} -2 & 5 \\ -3 & -3 \end{bmatrix}$	(II) 32
(C) $\begin{bmatrix} -12 & 8 \\ -16 & 8 \end{bmatrix}$	(III) 21
(D) $\begin{bmatrix} 15 & 9 \\ -21 & -11 \end{bmatrix}$	(IV) 26

Choose the correct answer from the options given below:

18th May Shift 2

If $\Delta$ represents the value of the determinant $\begin{vmatrix} 1 & \sin k\theta & 1 \\ -\sin k\theta & 1 & \sin k\theta \\ -1 & -\sin k\theta & 1 \end{vmatrix}$ , where $k$ is any real number then the value of $\Delta$ belongs to

CUET Mathematics 2026 29th May Shift 2 PYQs

Keyboard Shortcuts