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Q.

If A is a 3×3  matrix and B is its Adjoint matrix. If the determinant of B is 64 then the determinant of A is

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a

± 6

b

± 8

c

± 4

d

± 16

answer is B.

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Detailed Solution

B=64⇒A2=64⇒A=±8
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If A is a 3×3  matrix and B is its Adjoint matrix. If the determinant of B is 64 then the determinant of A is