Question

Ai đó giúp e vs e cảm ơn ạ

Answer 1

\(5,2863< \overline{5,a8b1}< 5,3841\)

=>\(2863< \overline{a8b1}< 3841\)

=>\(\left(a,b\right)\in\left\{\left(2;7\right);\left(2;8\right);\left(2;9\right);\left(3;0\right);\left(3;1\right);\left(3;2\right);\left(3;3\right)\right\}\)