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Home  >>  CBSE XII  >>  Math  >>  Model Papers
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The scalar product of the vector \( \hat i + 2\hat j + 4\hat k \) with a unit vector along the sum of vectors \( \hat i + 2\hat j + 3\hat k \) and \( \lambda \hat i + 4\hat j - 5\hat k \) is equal to one. Find the value of \( \lambda \).

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