C | mn+2 |
C | m+1n+2 |
m+2n+2 |
A.m=5,n=2 | B.m=5,n=5 | C.m=2,n=5 | D.m=4,n=4 |
C | mn+2 |
C | m+1n+2 |
m+2n+2 |
C | m+1n+2 |
C | m+2n+2 |
C | mn+2 |
C | m+1n+2 |
C | m2m+3 |
C | m+12m+3 |
(2m+3)! |
m!•(m+3)! |
(2m+3)! |
(m+1)!•(m+2)! |
m+1 |
m+3 |
3 |
5 |
A.36种 | B.38种 | C.108种 | D.114种 |
A.576 | B.720 | C.810 | D.648 |
A.141 | B.144 | C.150 | D.155 |
A.4种 | B.8种 | C.12种 | D.15种 |
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