 
			 
			MCQOPTIONS
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				| 1. | For matrix A,(A3) = I, A-1 is equals to _________ | 
| A. | A<sup>2</sup> | 
| B. | A<sup>-2</sup> | 
| C. | Can t say | 
| D. | None of the mentioned | 
| Answer» B. A<sup>-2</sup> | |