defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Mathematics Vector Algebra Scalar and Vector Product
The value of λ if the vectors \(\left( {\vec i + \lambda \vec j + 3\vec k} \right)\) and \(\left( {3\vec i + 2\vec j + 9\vec k} \right)\) are parallel is
1
\(\frac{2}{3}\)
2
\(\frac{3}{4}\)
3
\(\frac{5}{2}\)
4
\(\frac{1}{2}\)