CBSE 12th Standard Maths SUbject Matrices Ncert Exemplar MCQ Questions With Solution 2021
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CBSE 12th Standard Maths Subject Matrices Ncert Exemplar MCQ Questions With Solution 2021
12th Standard CBSE
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Reg.No. :
Maths
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If A and B are square matrices of the sameorder, then (A + B) (A - B) is equal to
(a)A2-B2
(b)A2 - BA - AB - B2
(c)A2 - B2 + BA - AB
(d)A2 - BA + B2 + AB
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If A is matrix of order m x nand B is a matrix such that AB' and B' A are both defined, then order of matrix B is
(a)m x m
(b)nxn
(c)nxm
(d)mxn
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The matrix \(\left[\begin{array}{ccc}0 & -5 & 8 \\ 5 & 0 & 12 \\ -8 & -12 & 0\end{array}\right]\) is a
(a)diagonal matrix
(b)symmetric matrix
(c)skew-symmetric matrix
(d)scalar matrix
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If matrix \(A=\left[a_{i j}\right]_{2 \times 2},\ where \ a_{i j}=\left\{\begin{array}{l}1, \text { if } i \neq j \\ 0, \text { if } i=j\end{array}\right.\) Then \(A^{2}\) is equal to
(a)I
(b)A
(c)0
(d)None ofthese
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For any two matrices A and B, we have
(a)AB=BA
(b)AB ≠BA
(c)AB = 0
(d)None of these
Multiple Choice Questions
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CBSE 12th Standard Maths Subject Matrices Ncert Exemplar MCQ Questions With Solution 2021 Answer Keys
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(c)
A2 - B2 + BA - AB
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(d)
mxn
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(c)
skew-symmetric matrix
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(a)
I
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(d)
None of these
