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Mathematics
Mathematics
Problem
18. The value of
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\hat{i} \cdot(\hat{j} \times \hat{k})+\hat{j} \cdot(\hat{i} \times \hat{k})+\hat{k} \cdot(\hat{i} \times \hat{j})
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is (A) 0 (B) -1 (C) 1 (D) 3 (A) 0 (B) -1 (C) 1 (D) 3
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