GATE IN 2009
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GATE IN

The eigen values of a $$2 \times 2$$ matrix $$X$$ are $$-2$$ and $$-3$$. The eigen values of matrix $${\left( {X + 1} \r
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A sphere of unit radius is centered at the origin. The unit normal at a point $$(x, y, z)$$ on the surface of the sphere
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A screening test is carried out to detect a certain disease. It is found that $$12$$% of the positive reports and $$15$
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