| 摘要 |
<p>A method for providing a service of a server is disclosed. The method comprises the steps of: generating multiple lottery ticket sets including at least one lottery ticket by using multiple lottery tickets purchased in advance; assigning the number of providing times to the generated lottery ticket sets and storing the lottery tickets; providing the lottery ticket set generated in a range corresponding to the number of providing times for assignment to a terminal device of a client; and changing and storing, when receiving a request for providing at least one lottery ticket included in the lottery ticket set of a first client to a second client, lottery ticket information mapped with the first client and the second client.</p> |
