A.
| B.
| ||||||||||||
C.
| D.
|
C | 1n |
C | 2n |
A | n-1n-1 |
C | 1n |
C | 2n |
A | n-1n-1 |
A.42 | B.96 | C.48 | D.124 |
A.1344种 | B.1248种 | C.1056种 | D.960种 |
A.C21×C981+C22×C981 | B.C1003-C983 |
C.C21×C982+C1003 | D.C1003-C982 |
A.13种 | B.16种 | C.24种 | D.48种 |
A.一样多 | B.甲多 | C.乙多 | D.不确定的 |
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