A = \(\frac{3}{4}\cdot\frac{8}{9}\cdot\frac{15}{16}\cdot\cdot\cdot\cdot\frac{9999}{10000}=\frac{1\cdot3}{2.2}\cdot\frac{2\cdot4}{3\cdot3}\cdot\frac{3.5}{4.4}\cdot\cdot\cdot\cdot\frac{99\cdot101}{100\cdot100}=\frac{1}{2}\cdot\frac{101}{100}=\frac{101}{200}\)

B = ( 1- 1/4 )( 1-1/9) ...( 1-1/10000 ) = 3/4 . 8/9 .....9999/100000 ( tương tự A )

a=5051/100 co ma

xin loi ban lam dung roi minh nham

b)\(\dfrac{1}{15}\)

c) \(\dfrac{3}{110}\)

b)\(=\dfrac{1}{15}\)

c)\(\dfrac{3}{110}\)

60/900 = 1/15

-1/9.15/22 . 9/-25 = 3/110

3 giờ 15 phút > 3,15 giờ

Các phần dưới tương tự nhé

ai k mình mình k lại

\(\dfrac{-2}{3}.\dfrac{15}{-4}-\dfrac{-1}{5}:\dfrac{1}{-5}\)

\(\dfrac{5}{2}-1=\dfrac{3}{2}\)

5/2 - 1

= 3/2

3/2