Q.
Let the matrix A=xy−z123112 where x,y,z∈N. If ∣adjadj(adj(adjA))||=48516 then number of such (x,y,z) are
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a
28
b
36
c
45
d
55
answer is B.
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Detailed Solution
|adj(adj(adj(adjA)))|=|A|16=48⋅516⇒|A|=10 ⇒x+y+z=10 No. of positive integral solution =9C2=36
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