5/6+38+2/9+27+16+2/7+1/6+2/5+11/12+5/8+4/9+7/8=?

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5/6+38+2/9+27+16+2/7+1/6+2/5+11/12+5/8+4/9+7/8=? 9,8,7,6 2,3,4,5 4,9,16,25 8,27,64,125 化简比(见补充)5/2:1/35/3:3/51/15:1/313/6:1/35/3:5/92/3:5/25/8:5/45/2:5/314/9:7/510/7:5/316/7:16/54/3:3/29/7:27/1113/5:8/515/16:5/37/8:38/24 1,1,2,4,3,9,4,16,( )25,6,( ),.15,16,13,19,11,22,( ),25,7,( ),.填入适当的数2 6 7 11 2 3 14 4 ()1 3 5 23 5 5 6 4()3填入适当的数3,5,7,11,15,19,23,.6,12,33,27,21,10,15,30,.2,5,10,16,22,28,32,38,24,...2,3,5,8,12,16,23,3 2+4 9-5 3+5 8-3 2+2+38 5 7 6 417 18 5 16 10一共有三行, 九宫格题6 5 2 1 8 7 9 3 6 2 5 44 8 16 5 38 1 65 6 3 2 4 7 1 9 8 38*6*5****7*2*3*** 谁帮我算下均数±标准差第一组:年龄:21,22,27,28,16,16,15,16,16,15,16,17,17,12,10,16,4,15,19,16,61,4,14,14,9,5,2,9,4,55,14,38,11,3,3,10,32,22,22,33,23,27,21,15,5,38,37,6,22,31,35,52,25,14,20,17,14,14,16,52,5,35,16,15,32,28,15第二组 帮我算下均值±标准差第一组:年龄:21,22,27,28,16,16,15,16,16,15,16,17,17,12,10,16,4,15,19,16,61,4,14,14,9,5,2,9,4,55,14,38,11,3,3,10,32,22,22,33,23,27,21,15,5,38,37,6,22,31,35,52,25,14,20,17,14,14,16,52,5,35,16,15,32,28,15,平均年 5/6+27+5/9+1/6+1/7+3/7+5/9+4/7+2/5+4/9+4/5+1/5+2/9=? ****5**2* 27***81** 8***6*9** 13 *9***5*** 5****3*** *1**7*68* 帮帮忙解个九宫图(81格)高手来9-5--38--6---5-4-7-2-84---32--4-5--81----8372-63-------16--7---4----61-9-9----75- 数字推理 8,-4,2,-1 ,1/21 ,3/4,9/5,7/16,25/9,( )求解题方法A 15/38 B 11/36 C 14/27 D18/29 12,-4,8,-32,-24,768,()5,3,7/3,2,9/5,5/3,()6,7,18,23,38,()2,3,7,25,121,()12,16,22,30,39,49,() 九宫格题目6***7**9* *****5**8 *32*8*4** **6***5** *1**27**6 *8*6***1* 7**4*2*** 5***9**4* *2*5***7* 分数乘法的简便运算?2/9-7/16×2/94/5×7/9×5/85/6×5/9+5/9×1/65/7×16×21/5 1+2-3-4+5+6-7-8+9+10-.+38-39-40+41=?- 1+2+3+4+5+6+7+8+9+10-92+38=?