Question

tính nhanh:   1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64

Rút gọn phân số 5083/2431

Answer 1

Hoặc

Cách phía trên là cách lớp 5 nhé

Answer 2

Ta có:\(\dfrac{1}{2}+\dfrac{1}{4}+\dfrac{1}{8}+\dfrac{1}{16}+\dfrac{1}{32}+\dfrac{1}{64}\)

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

Ta có:\(\dfrac{5083}{2431}=\dfrac{23}{11}\)

Answer 3

1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64

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

= 63/64

5083/2431 = 21/11

Answer 4

\(\dfrac{5083}{2431}=\dfrac{23}{11}\)