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Two vectors $2 \hat{i} + 3 \hat{j} - \hat{k} and - 4 \hat{i} - 6 \hat{j} + λ \hat{k}$ are parallel to each other then value of $λ$ will be

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Correct option is B

For the vectors A→ and B→ to be parallel, A→ x B→=0

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Two vectors 2i^+3j^−k^ and −4i^−6j^+λk^ are parallel to each other then value of λ will be

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Two vectors $2 \hat{i} + 3 \hat{j} - \hat{k} and - 4 \hat{i} - 6 \hat{j} + λ \hat{k}$ are parallel to each other then value of $λ$ will be