1.
If a=i^+5j^\vec{a} = \hat{i} + 5\hat{j}, b=2i^+3k^\vec{b} = 2\hat{i} + 3\hat{k}, c=3i^+2k^\vec{c} = 3\hat{i} + 2\hat{k} and d=i^j^\vec{d} = \hat{i} - \hat{j}, then (ca)(b×d)=(\vec{c} - \vec{a}) \cdot (\vec{b} \times \vec{d}) =