In April 2026, which country successfully tested 'Project Kuiper-2', an advanced low-earth orbit (LEO) satellite constellation for high-speed internet?
In March 2026, which country unveiled the 'Silk-Road Digital Rail', a cross-border optical fiber network connecting 10 nations for high-speed cloud computing?
The ratio of the speed of two cars is 5 : 4. If the first car covers a distance in 4 hours, how much time will the second car take for the same distance?