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If x,y,z, are in A.P., then value of the...

If x,y,z, are in A.P., then value of the det A. where `A=[(4,5,6,x),(5,6,7,y),(6,7,8,z),(x,y,z,0)]` is :

A

`x/2 ,6`

B

x,5

C

`x/4`, any arbitrary

D

any arbitrary, 7

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The correct Answer is:
D
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