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\vec{a} = 2 \hat{i} + \hat{j} + 3 \hat{k}, \vec{b} = \hat{i} + \hat{j} + 2 \hat{k} ও \vec{c} = \hat{i} + \hat{2 j} + \hat{k}

(\vec{a} \times \vec{b}) \times \vec{c} = ০

(\vec{a} \times \vec{b}) . \vec{c} = ০

(\vec{a} \times b} \cdot \vec{c} \neq 0

(\vec{a} \times \vec{b}} \times \vec{c} \neq 0

(\vec{a} . \vec{b}} . \vec{c} \neq 0

ANS : 2

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