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JEE Main 2004 Mathematics question

MathematicsVector AlgebraJEE Main 2004

Let , and be three non-zero vectors such that no two of these are collinear. If the vector is collinear with and is collinear with ( being some non-zero scalar) then equals

Answer: (4)

Solution

and . Then and also \vec\vec$ b +

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Question ID VK-038496