1,3,4,1,9()
5/9+(3/4-1/2)
1,-1,3,-2,9-4()()找规律
(7/20-5/36)*4-4/9 【1-(1/4+3/8)】/1/4
(1+2/1)(1+4/1)(1+6/1).(1+10/)(1-3/1)(1—5/1).(1-9/1)
(1-1/2)*(1-1/3)*(1-1/4)*……*(1-1/9) 算式
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/
7/2+9/4+(-1/3)-0.25+(-1/6)
数字推理题1,3,4,1,9,( )
数字推理-4/9,10/9,4/3,7/9,1/9,( )
8/9×[3/4÷(7/16-1/4)]
简算;8/9*[3/4-(7/16-1/4)]
8/9*{3/4-(7/16-1/4)}简算