MCQOPTIONS
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| 1. |
In how many ways can the letters of the word "PROBLEM" be rearranged to make 7Â letter words such that none of the letters repeat? |
| A. | 49 |
| B. | 7! |
| C. | 7^7 |
| D. | 7^3 |
| Answer» C. 7^7 | |