$#Momo gửi$
Đáp án: $\dfrac{26}{768}$
Giải thích các bước giải:
$\dfrac{3}{2}$ + $\dfrac{3}{4}$ + $\dfrac{3}{8}$ + $\dfrac{3}{16}$ + $\dfrac{3}{32}$ + $\dfrac{3}{128}$ + $\dfrac{3}{256}$ + $\dfrac{3}{512}$ + $\dfrac{3}{1024}$
⇒($\dfrac{3}{2}$ + $\dfrac{3}{8}$) + ($\dfrac{3}{4}$ + $\dfrac{3}{16}$) + ($\dfrac{3}{32}$ +$\dfrac{3}{128}$) + (3,64+3,256) + $\dfrac{3}{512}$
⇒$\dfrac{4+ 6}{2}$ + $\dfrac{6}{16}$ + $\dfrac{6}{896}$ + $\dfrac{3}{512}$
⇒$\dfrac{10}{2}$ + $\dfrac{13}{056}$ + $\dfrac{3}{512}$
⇒$\dfrac{23}{256}$ + $\dfrac{3}{512}$
⇒$\dfrac{26}{768}$
