A.1+83 B.1+81 C.1+79 D.1+77
[单选题]:1+1,2+3,3+5,1+7,2+9,3+11,1+13,…第40项为( )A.1+83 B.1+81 C.1+79 D.1+77
[单选题]1/5,1/3,3/7,1/2,( )A.5/9B.1/6C.6D.3/5
[单选题]1/2,1,2/3,3/4,5/7,()A.7/11B.8/11C.7/13D.8/13
[主观题]3,2,5/3,3/2,()A、1/2;B、1/4;C、5/7;D、7/3
[试题]3,2,5/3,3/2,()A、1/2;B、7/5;C、1/4;D、7/3
计算:(1)((11)/(12)-(7)/(6)+(3)/(4)-(13)/(24))×(-48);(2)-9+5×|-3|-(-2)2÷4;(3)-18+(-
[单选题]:1,2/3,5/9,1/2,7/15,4/9,( )。A.5/9B.3/5C.2/13D.3/7
[单选题]:2/3,1/2,2/5,1/3,2/7,( )。A.1/4 B.1/6 C.2/11 D.2/9
[单选题]2/3,1/2,2/5,1/3,2/7,( )。A.1/4B.1/6C.2/11D.2/9
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