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Question

Question: \[\lbrack ikj\rbrack + \lbrack kji\rbrack + \lbrack jki\rbrack\]...

[ikj]+[kji]+[jki]\lbrack ikj\rbrack + \lbrack kji\rbrack + \lbrack jki\rbrack

A

1

B

3

C

– 3

D

– 1

Answer

– 1

Explanation

Solution

[ikj]+[kji]+[jki]=[ikj]+[ikj]−[ikj]=[ikj]=−1\lbrack\mathbf{ikj}\rbrack + \lbrack\mathbf{kji}\rbrack + \lbrack\mathbf{jki}\rbrack = \lbrack\mathbf{ikj}\rbrack + \lbrack\mathbf{ikj}\rbrack - \lbrack\mathbf{ikj}\rbrack = \lbrack\mathbf{ikj}\rbrack = - 1.