A.18 B.20 C.24 D.40
[单选题]1 21 31 44 315 7( ) 13A.18 B、20 C、24 D、40
[单选题]1/3,4/7 ,7/11 ,2/3 ,13/19 ,( )A. 16/21B. 16/23C. 18/21D. 17/21
计算:(1)((11)/(12)-(7)/(6)+(3)/(4)-(13)/(24))×(-48);(2)-9+5×|-3|-(-2)2÷4;(3)-18+(-
7.已知 _(1)=(1,2,3), _(2)=(3,-2,1), _(3)=(2,-3,1), 则-|||-(a)_(1)+3(a)_(2)-5(a)_(3)
1 2 3 4 5 6 7 8 9 10 11 12 13 14
[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
计算:(1)(-1)100×5+(-2)4÷4;(2)(-3)3-3×(-(1)/(3))4;(3)(7)/(6)×((1)/(6)-(1)/(3))×(3)/
[单选题]1/3,4/7,7/11,2/3,13/19,( )A.16/21B.16/23C.18/21D.17/21
[单选题]1/3,4/7,7/11,2/3,13/19,()A.16/21B.16/23C.18/21D.17/21
[单选题]1/3,4/7,7/11,2/3,13/19,( )A.16/21B.16/23C.18/21D.17/21