Algebra

CBSE Class 12 Applied Mathematics · 20 board questions from this chapter; 11 listed below, 2023–2026 · 1 of them repeated across years

• The number of all possible matrices of order 3 × 2 with each entry 1 or 2 is:2026
• If AB=A and BA=B, then (B^2+B) is equal to:2026asked 2×
• The value of |1, 2, 3; 4, 5, 6; 7, 8, 9| is:2026
• If A and B are symmetric matrices of the same order, then (AB^′-BA^′) is a2025
• The inverse of matrix A= [4, -1; 2, 1] is2025
• If |2 x, 5; 4, x| = |3, 5; 4, 6|, then the value of x is2025
• The value of Δ= |42, 2, 5; 79, 7, 9; 29, 5, 3| is:2024
• If A= [1, 0; -2, 1] and B= [-5, 10; -10, -5], then AB is:2023
• If [x+y, x+2; 2 x-y, 16] = [8, 5; 1, 3 y+1], then the values of x and y are:2023
• A and B are square matrices each of order 3 such that |A|=-1 and |B|=3. What is the value of |3 AB|?2023
• If |2, 3, 2; x, x, x; 4, 9, 1| +3=0, then the value of x is:2023

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