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Matrices and Determinants - Set 9
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NUST Entrance Test
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Mathematics
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Matrices and Determinants
Set 9
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Mashaal Masha
Sep 28, 2022
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Choose the correct options for the following questions.
The diagonal containing the entries $a_{11},a_{22},a_{33}.....a_{mn}$ in a square root matrix $A=[a_{mn}]$ is called then
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Difficulty: Easy
A:
Identity matrix
B:
Square matrix
C:
Row matrix
D:
Principal diagonal
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If $\begin{bmatrix}a+b & c+d \\c-d & a-b \end{bmatrix}=\begin{bmatrix}6 & 8 \\12 & 4 \end{bmatrix}$ then c=?
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Difficulty: Easy
A:
5
B:
10
C:
12
D:
20
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