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Let P=[(1,2,0),(-1,3,1),(4,0,-2)]. Q=[(3...

Let `P=[(1,2,0),(-1,3,1),(4,0,-2)]. Q=[(3,-2,1),(-1,4,-1),(0,-4,1)].R=[(3,-2,1),(-1,4,-1),(1,-4,1)]` A student throws a die, He chooses the matrix P if he gets 1.if he sets 2 or 4 R if he gets 5 or 6. For the selected matrix (say A) he mart solving the equation `|A|x^2+|adj A|x+|adj(adjA)|=0.` If the equation is quadratic then the probability that it has real roots is

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