MCQOPTIONS
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| 1. |
Which is the digit at unit place of the product \(({\rm{ }}{{\bf{5}}^{{\bf{41}}}} \times {{\bf{7}}^{{\bf{69}}}} \times {{\bf{3}}^{{\bf{57}}}})\) ? |
| A. | 7 |
| B. | 5 |
| C. | 3 |
| D. | 1 |
| Answer» C. 3 | |