To install Google Chrome on ubuntu 15.10
1.Go to google chrome linux download link
Google Chrome all release channels download links
2.Click the Download Google Chrome button.
3.Select the 32 bit or 64 bit .deb package file for Debian/Ubuntu and click Accept and Install button.
4.Double click the downloaded .deb package file or open the file with ubuntu software center and click the install button.
5.Type your ubuntu password if needed and wait until the installation is complete.
6.Open Terminal.To open Terminal, click Applications icon from unity launcher. And type Terminal in the search field.And click Terminal.
7.Type below command in terminal to open google chrome browser.
google-chrome-stable