15,5,3,9,14,2,7,49,18,3,2,( )A.12 B.13 C.14 D.15
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15,5,3,9,14,2,7,49,18,3,2,()A.12B.13C.14D.1515,5,3,9,14,2,7,49,18,3,2,()A.12B.13C.14D.1515,5,3,9,14,
15,5,3,9,14,2,7,49,18,3,2,( )A.12 B.13 C.14 D.15
15,5,3,9,14,2,7,49,18,3,2,( )
A.12 B.13 C.14 D.15
15,5,3,9,14,2,7,49,18,3,2,( )A.12 B.13 C.14 D.15
答案是A
每四个数字是一组,第一个数字等于第四个数字除以第三个数字再乘以第二个数字.
18=3*(12/2)
15/49除(5/7-3/14*1/3) 简算
7/5×3/2+14/15÷1/9
15,5,3,9,14,2,7,49,18,3,2,( )A.12 B.13 C.14 D.15
1***4*3*7* **7***8** 49***7*5* **14*6*** 6***7***3 ***5*39** **9***4** 7*2*9***8
(2/7+3/2)÷9/49-1,5
1*2*3+3*6*9+7*14*21/1*3*5+3*9*15+7*21*35越快越好!1
5/11*17+17/11*6(13+26/27)*1/135/8*3/5+1/2*1/4(5/7-3/14*2/3)*49/15
1*3*5+3*9*15+7*21*35分之1*2*3+3*6*9+7*14*21
(1*2*3+3*6*9+7*14*21)/(1*3*5+3*9*15+7*21*35)
1*2*3+3*6*9+5*10*15+7*14*21分之1*3*5+3*9*15+5*15*25+7*11*35
1*2*3+3*6*9+5*10*15+7*14*21/1*3*5+3*9*15+5*15*25+7*21*35=?
1×2×3+3×6×9+5×10×15+7×14×21/1×3×5+3×9×15+5×15×25+7×21×35=?
(1*2*3+3*6*9+5*10*15+7*14*21)/(1*3*5+3*9*15+5*15*25+7*21*35)
(1×2×3+3×6×9+5×10×15+7×14×21)/(1×3×5+3×9×15+5×15×25+7×21×35)
(5/7-3/14×1/3)÷15/49怎么做?
3/4 × 8/9 - 1/3简便运算和7 × 5/49 + 3/14快.
3/7 × 49/9 - 4/3 2.8/9 × 15/36 + 1/27 3.12×3/7 × 49/9 - 4/3 8/9 × 15/36 + 1/27 12× 5/6 – 2/9 ×3 8× 5/4 + 1/4 6÷ 3/8 – 3/8 ÷6 4/7 × 5/9 + 3/7 × 5/9 5/2 -( 3/2 + 4/5 ) 7/8 + ( 1/8 + 1/9 ) 9 × 5/6 + 5/6 3/4 × 8/9 - 1/3 7 × 5/4
5/6+59+25+1/6+3/7+2/9+4/7+11/15+12/15+11/14+2/5+3/8+5/9+2/7