ma-2002 |
na+2003 |
ma-2002 |
na+2003 |
2002 |
2003 |
ma-2002 |
na+2003 |
2002 |
2003 |
A.是 | B.不是 | C.条件不足 | D.不能确定 |
n(n+1) |
2 |
A.m-2n |
B.2n-m |
C.当m≥2n时,m-2n;当m<2n时,2n-m |
D.当m≥2n时,2n-m;当m<2n时,m-2n |
A.(abc+4b)能被a3整除 | B.(abc+4b)能被b3整除 |
C.(abc+4b)能被c3整除 | D.(abc+4b)能被abc整除 |
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