4/5×6/7×8/9×10/11×12/13×14/15........×1000000/1000001
来源:百度知道 编辑:UC知道 时间:2024/06/17 19:13:11
4/5×6/7×8/9×10/11×12/13×14/15........×1000000/1000001
与0.002比较大小
与0.002比较大小
设A=4/5×6/7×8/9×10/11×12/13×14/15……×1000000/1000001
则A=(4×6×8×10×……×1000000)/(5×7×9×11×……×1000001)
B=0.002
B/A=1000001!/{500×6×(500000!)^2}
=500001×500002×500003×……×1000001/(500×6×500000!)
=500001×500002×500003×……×1000001/3000×2×3×4×……×500000
很明显B/A>1,则B>A,即
0.002>4/5×6/7×8/9×10/11×12/13×14/15×……×1000000/1000001
1/(2/3)/(3/4)/(4/5)/(5/6)/(6/7)/(7/8)
0,3/4,2/5,5/6,4/7,7/8,2/3
找规律:2/4 3/6 5/8 7/9 ()/() ()/()
奥数题:1/2/3/4/5/6/7/8/9=2.8
(8/9+3/7+6/11)÷(3/11+5/7+4/9)
(3*4*5*6*7*8)(1/3+1/4+1/5+1/6+1/7+1/8)
简便计算?71 1/6*6/7+61 1/5*5/6+51 1/4*4/5+41 1/3*3/4+31 1/2*2/3
1/1*2*3+1/2*3*4+1/3*4*5+1/4*5*6+1/5*6*7
2*2/1*3+4*4/3*5+6*6/5*7+8*8/7*9+10*10/9*11怎么算???
4+5\6*7/8Mod9