PYQ Vault

Day 193: CBSE Class 12 Maths

5 questions. Try each one first, then open its answer.

  1. Question 1

    Linear Programming. Asked once: 2024 (same type asked 4 times)

    17
    The number of corner points of the feasible region determined by constraints x≥0x \geq 0, y≥0y \geq 0, x+y≥4x + y \geq 4 is :

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  2. Question 2

    Matrices. Asked once: 2025 (same type asked 4 times)

    9
    Let A=[1−2−104−1−321]A = \begin{bmatrix} 1 & -2 & -1 \\ 0 & 4 & -1 \\ -3 & 2 & 1 \end{bmatrix}, B=[−2−5−7]B = \begin{bmatrix} -2 \\ -5 \\ -7 \end{bmatrix}, C=[9 8 7]C = [9\ 8\ 7], which of the following is defined ?

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  3. Question 3

    Matrices. Asked once: 2026 (same type asked 4 times)

    6
    If A and B are skew symmetric matrices of same order, then which of the following matrices is also skew symmetric ?

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  4. Question 4

    Matrices. Asked once: 2025 (same type asked 4 times)

    22
    If A=[10−15]A = \begin{bmatrix} 1 & 0 \\ -1 & 5 \end{bmatrix}, then find the value of K if A2=6A+KI2A^2 = 6A + KI_2, where I2I_2 is an identity matrix.

  5. Question 5

    Matrices. Asked once: 2024 (same type asked 4 times)

    6
    Find the matrix A2A^2, where A=[aij]A = [a_{ij}] is a 2×22 \times 2 matrix whose elements are given by aij=maximum (i,j)−minimum (i,j)a_{ij} = \text{maximum } (i, j) - \text{minimum } (i, j) :

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