MCQ
$\hat{i} \cdot(\hat{j} \times \hat{k})+\hat{j} \cdot(\hat{i} \times \hat{k})+k \cdot(\hat{i} \times \hat{j})$ का मान है$-$
- A$0$
- B$-1$
- ✓$1$
- D$3$
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