A) \[\pm \frac{\mathbf{i}+\mathbf{j}-\mathbf{k}}{\sqrt{3}}\]
B) \[\pm \frac{\mathbf{i}+\mathbf{j}+\mathbf{k}}{\sqrt{3}}\]
C) \[\pm \frac{\mathbf{i}+\mathbf{j}-2\mathbf{k}}{\sqrt{6}}\]
D) \[\pm \,\,\mathbf{k}\]
Correct Answer: C
Solution :
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