![](https://i.vdoc.vn/data/avatars/2022/63779068033514033452-size-56x56-znd.jpg)
Tính: A = 1+5+5²+
...+5⁴⁹+5⁵⁰
B=2¹⁰-2⁹-2⁸-...-2²-2
C=3⁵⁰-3⁴⁹+3⁴⁸-3⁴⁷+...+3²-3+1
D=10/100+10/150+10/210+...+10/1200
E=1.2+2.3+3.4+...+99.100
F= 1²+2²+3²+...+97²+98²
G=1/3+1/3²+1/3³+...+1/3¹⁰⁰
H=1.3+2.4+3.5+...+97.99+98.100
I=1/2+1/14+1/35+1/65+1/104+1/152
2
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