(1+1/3+1/5+1/7+...+1/97+1/99):(1/1x99+1/3x97+1/5x95+...+1/97x3+1/99x1)
1+1/3+1/5+1/7+...+.1/97+1/99/1/1x99+1/3x97+1/5x95+...+1/97x3+1/99x1
tính
1+ 1/3+ 1/5+1/7+...+1/97+1/99
1/1x99 + 1/ 3x97 + 1/5x95 +...+ 1/97x3 + 1/99x1
Mình không ghi được phân số:
Tử số: 1+1/3+1/5+1/7+.........+1/97+1/99
A=(dấu gạch ngang)
Mẫu số: 1/1x99+1/3x97+1/5x95+........+1/97x3+1/99x1
***Tính cho mình đó là phân số gì
1+(1+2)+(1+2+3)+...+(1+2+3+...+99) / 1x99+2x98+3x97+...+99x1=???
Tính nhanh: Tử số=(1+1/3+1/5+1/7+...+1/97+1/99)x1/5 Mẫu số=2/1x99+2/3x97+2/5x95+...+2/49x51
Tính nhanh:
Tử số=(1+1/3+1/5+1/7+...+1/97+1/99)x1/5
Mẫu số=2/1x99+2/3x97+2/5x95+...+2/49x51
tính nhanh
a)100-98+96-94+...+4-2
b)1+2-3-4+5+6-7+-8+9+10-11-12+13+2010
c)(864x11-423x4):(432x(3+6+9+...+27-132))
d)1x2+2x3+3x4+...+99x100
e)\(\frac{1+\left(1+2\right)+\left(1+2+3\right)+\left(1+2+3+4\right)+...+\left(1+2+3+...+99\right)}{1x9+2x98+3x97\: +....+99x1}\)
giúp mk với , mk tick cho 3 tick , nha !!!!
a)(864x11-423x4):(432x(3+6+9+...+27-132))
b)1x2+2x3+3x4+...+99x100
ec)\(\frac{1+\left(1+2\right)+\left(1+2+3\right)+\left(1+2+3+4\right)+...+\left(1+2+3+...+99\right)}{1x9+2x98+3x97\: +....+99x1}\)
giúp mk với , mk tick cho , nha !!!!