Question

a] x x ab = ab0ab 

b] abcabc : x = abc

Answer 1

Lời giải:

a. 

$\overline{ab0ab}=\overline{ab}\times 1000+\overline{ab}=\overline{ab}\times (1000+1)=\overline{ab}\times 1001$

$\Rightarrow x=1001$

b.

$\overline{abcabc}=\overline{abc}\times 1000+\overline{abc}=\overline{abc}\times (1000+1)=\overline{abc}\times 1001$

$\Rightarrow x=1001$