CBSE Class 12 Mathematics 2026 Main Paper 65/3/3 · Q81 Marksmatrix_order CBSE Class 12 Mathematics 2026 Main Paper 65/3/3 · Question 8 (Matrices) If [2 1]X=[3 4 5], find the order of X. (A) 3×1(B) 2×3(C) 1×2(D) 1×3