Question

1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 = 

các bn giúp mình nha cách làm nhanh và gọn nhá 

Answer 1

1/2+1/4+1/8+1/16+1/32+1/64

Ta thấy:

1/2=1/1-1/2

1/4=1/2-1/4

1/8=1/4-1/8....

1/64=1/32-1/64

A= 1/1-1/2+1/2-1/4+1/4-1/8+.....+1/32-1/64

A=1 - 1/ 64

A= 63/64

Answer 2

\(\frac{32}{64}+\frac{16}{64}+\frac{8}{64}+\frac{4}{64}+\frac{2}{64}+\frac{1}{64}=\frac{63}{64}\)\(\frac{63}{64}\)

Answer 3

ta thấy:

1/2=1/1-1/2

1/4=1/2-1/4

1/8=1/4-1/8...

1/64=1/32-1/64

A=1/1-1/2+1/2-1/4+1/4-1/8+...+1/32-1/64

A=1/1-1/64

A=63/64