5/3,3/5,5/2,4/5,25/8 数字推理 请问下一项是不是24/25 我推算出来是这么多

2:5/4 9/25:3/5 2/3:5/6 1/5:1/20 5/9:1 2:3/8 3/4:4/3化简比 1/2+3-2+5-8+25 分式数列5/3,3/5,5/2,4/5,25/8,（）5/3,12/7,13/21,24/25 3/8+(2/5-6/25)=? 8 12 8 5 8 5 25 25 2 2 8 8 3 2 0 3/1*5/3+1 7/5-9/5*7/5 1-7/5*25/21 2/1+4/5*5/4 6/13/1*5/3+17/5-9/5*7/51-7/5*25/212/1+4/5*5/46/1*（5-3/2）8/7*7+8/3 [3又2/3*(-5/11)+(-0.4)/(-4/25)]*1又1/5/(0.125*8) 计算1/5+2/5+3/5+4/5+1+6/5+7/5+8/5+……+25找出这道题的简便算法 3加36除3减2乘4=186加36除3减2乘4减1=5加括号4 4 4 4=2 加运算符号1 2 3 4 5 6 7 8 9=90 5 5 5 5 5 =15 5 5 5 5 =25 5 5 5 5 =35 5 5 5 5 =41 2 3 4 5 6 7 8 9=36 =10 定义一种新运算* 已知：2*4 8 3*5 11 5*3 13 9*5 25 求3*7 ? 1+2+3+4+5+6+7+8+9+10-50+20-25+1+4+5 7+5+4-5+2-6+2-8+5-2+5+2-5+3= 能简算要简算3/5÷1/4÷6÷14/1523/25÷(3/4÷2/5)15/16÷(5/12÷5/8+3/8) 2,5,2,20,3,4,3,36,5,6,5,150,8,5,8,() 3/2除以【（3/4+4/5）*5/8】 1+1+2+3+4+5+6+7+8+9*2+3+6+5+4+98+7+5+5/5/6+2*5*5*9*999*555*1524*3256*3561.9999999999*5*6*3*25*96 计算:3/5×1/4,11/25×5/33,6×1/3×2/5,77/100×0×8/9 (2.63+3/8)*(25+2/5)*(2.37-3/8)*(25+2/5)