(1) 3,6,12,( ),( ),
(1) 3,6,12,( ),( ),
1/3+1/(3+6)+1/(3+6+9)+1/(3+6+9+12)+1/(3+6+9+12+15)+.1/(3+6+9
1/3+1/6+1/12+1/24+1/48
6*《9/8-8/7》*《-12》 《3/1-3+6/1-12/7》*《-6》2次方
(-12)*(-1/2+2/3-5/6)
1,2,3,6,12,数字推理
1 2 3 4 6 空 12
填空:1,3,2,6,4,(),(),12,(),
智商测试1 3 6 ()12
1/6+7/12÷(3/4-1/6)简算,
1/(1*3) + 1/(3*6) + 1/(6*9) + 1/(9*12) + …+1/(96*99)
1/(3+6)+1/(3+6+9)+1/(3+6+9+12)+.+1/(3+6+9+...+99)