A.-1 | B.1 | C.0 | D.2 |
2000-1990+1980-1970+…+20-10 | ||||||||||||
(1-
|
1 |
2 |
1 |
4 |
109 |
144 |
3 |
4 |
4 |
3 |
4 |
3 |
3 |
7 |
3 |
5 |
1 |
8 |
3 |
7 |
A.2 | B.3 | C.4 | D.5 |
1999×1999-1999 |
1998×1998+1998 |
2000×2000-2000 |
1999×1999+1999 |
2001×2001-2001 |
2000×2000+2000 |
A.-1 | B.3 | C.-3 | D.1 |
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