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Question 5:
Evaluate the determinants
(i) 
(iii) 
(ii) 
(iv) 
(i) Let
.
It can be observed that in the second row, two entries are zero. Thus, we expand along the second row for easier calculation.
(ii) Let
.
By expanding along the first row, we have:
(iii) Let
By expanding along the first row, we have:
(iv) Let
By expanding along the first column, we have:
