I think you are confusing URL query string parameters and the HTTP response body. Query string parameters will be passed from the Arduino to your HTTP server. Given that you want to get the answer 10 from the server, the Arduino can't include the answer in the query string.
You want a URL on your HTTP server that when you hit http://190.168.1.100 returns the value 10 in the body of the request.
The Arduino code then needs to issue a HTTP get, and parse the response that comes back to extract the value you want from the body.