Question

\(\dfrac{1}{n}\) là gì vậy ạ?

Answer 1

1 ; 2 ; 3 ; 4 ; 5

Answer 2

giúp với ạ

Answer 3

\(n\in\left\{1;2;3;4;5\right\}\)

Hok tốt 

Answer 4

\(\dfrac{1}{n}\in\left\{1;\dfrac{1}{2};\dfrac{1}{3};\dfrac{1}{4};\dfrac{1}{5}\right\}\)