Q.The value of $\lambda$ for which the vectors $3\hat{i} - 6\hat{j} + \hat{k}$ and $2\hat{i} - 4\hat{j} + \lambda \hat{k}$ are parallel is

2/3

3/2

1/2

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Q.The value of λ\lambdaλ for which the vectors 3i^−6j^+k^3\hat{i} - 6\hat{j} + \hat{k}3i^−6j^​+k^ and 2i^−4j^+λk^2\hat{i} - 4\hat{j} + \lambda \hat{k}2i^−4j^​+λk^ are parallel is