1÷(1+1/2)÷(1+1/2)÷(1+1/4)÷.÷(1+1/18)÷(1+1/19)÷(1+1/20)注:
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1÷(1+1/2)÷(1+1/2)÷(1+1/4)÷.÷(1+1/18)÷(1+1/19)÷(1+1/20)注:1÷(1+1/2)÷(1+1/2)÷(1+1/4)÷.÷(1+1/18)÷(1+1/19
1÷(1+1/2)÷(1+1/2)÷(1+1/4)÷.÷(1+1/18)÷(1+1/19)÷(1+1/20)注:
1÷(1+1/2)÷(1+1/2)÷(1+1/4)÷.÷(1+1/18)÷(1+1/19)÷(1+1/20)
注:
1÷(1+1/2)÷(1+1/2)÷(1+1/4)÷.÷(1+1/18)÷(1+1/19)÷(1+1/20)注:
1÷(1+1/2)÷(1+1/3)÷(1+1/4)÷.÷(1+1/18)÷(1+1/19)÷(1+1/20)
=1÷(1+1/2)÷(1+1/3)÷(1+1/4)÷.÷(1+1/19)×(20/21)
=1÷(1+1/2)÷(1+1/3)÷(1+1/4)÷.×(19/20)×(20/21)
=1×(2/3)×(3/4)×(4/5)×.×(19/20)×(20/21)
=1×2/21
=2/21
=1除以3/2,除以4/3,除以5/4.......除以21/20.
=1乘以2/3,乘以3/4,乘以4/5,........乘以20/21
=2/21
原式=1÷3/2÷4/3÷5/4............÷21/20
=1*2/3*3/4*4/5...............*20/21
=2/21
1÷1+1÷1/2+1÷1+1÷1/2+1÷1+1÷4+……+1÷1+1÷18+1÷1+1÷19+1÷1+1÷20
1+0.5+0.5+1÷(4+……+20)
1+1+1÷204
2+1/204
2又204分之一
(1-1÷2)(1-1÷3)(1-1÷4)...(1-1÷n)
请问1÷(2÷3)÷(3÷4)÷(4÷5)÷...÷(2008÷2009)÷(2009÷2010)怎么做?
1÷(1+1/2)÷(1+1/2)÷(1+1/4)÷.÷(1+1/18)÷(1+1/19)÷(1+1/20)注:
1÷(1-1/2)÷(1-1/3)÷(1-1/4)÷…÷(1-1/2010)
计算; [ -1-(1-2分之1)÷3}÷3}÷(-3-2×2).
2/35÷{(1/5+1/6)÷24}
(y+1)÷3-(y-1)÷2≥(y-1)÷6
巧算:1÷(1+1/2)÷(1+1/3)÷(1+1/4)÷……÷(1+1/20)=1÷(1+1/2)÷(1+1/3)÷(1+1/4)÷……÷(1+1/20)=
奥数1÷(1÷2)÷(2÷3)÷(3÷4).(1000÷2000)=
1+1÷2+1÷4+1÷8+1÷16+1÷32+1÷64
2分之1÷(3分之1÷4分之1)÷(4分之1÷5分之1)÷(5分之1÷6分之1)÷(6分之1÷7分之1) 用简便方法计算
(1-25%)÷(1+1/3) (80%-2/5÷2)×75% 7.2÷(1(1-25%)÷(1+1/3) (80%-2/5÷2)×75% 7.2÷(1-10%-18%)
急巧算1÷(3÷4)÷(2÷3)
-13÷2*3÷(-1/3)÷(-5)×(-1^8)=?、、
[(x2+y2)÷y-2y]÷(1÷y-1÷x)1÷(x2-y2)-(x-y)÷y怎么做?
初二分式计算:1+{a-【1÷(1-a)】}÷【1+(a÷a²-2a+1)】
6÷2(1+2)
6÷2(1+2)=?