In Questions fiLl in the Blanks $\text { List all positive integers } m \text { and } n \text { such that } K _ { m , n } \text { has a Hamilton circuit. }$

In questions fill in the blanks.1113:1156
- $\text { List all positive integers } m \text { and } n \text { such that } K _ { m , n } \text { has a Hamilton circuit. }$$\underline{\quad\quad}$