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Permutations and Combinations - Data Intensity 1 :: Discussion
| 40. | A group of 10 representatives is to be selected out of 12 seniors and 10 juniors. In how many different ways can the group be selected, if it should have 5 seniors and 5 juniors? | |
| A. | ¹²C? * 10 | |
| B. | ¹²C? * 10 | |
| C. | ¹²C? * ¹?C? | |
| D. | 12 * ¹?C? | |
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