tính a=3/2* 4/3* 5/4* . . . * 100/99

2 câu trả lời

`A = 3/2 xx 4/3 xx 5/4 xx ... xx 100/99`

`=> A = (3 xx 4 xx 5 xx ... xx 100)/(2 xx 3 xx 4 xx ... xx 99)`

`=> A = 100/2 = 50`

Vậy `A = 50`

`#dtkc`

 

$\text{A = }$$\frac{3}{2}$ $\text{. }$$\frac{4}{3}$ $\text{. }$$\frac{5}{4}$ $\text{...}$$\frac{100}{99}$

$\text{A = }$$\frac{100}{2}$

$\text{A = 50}$

$\text{=> Vậy: A = 50}$