Are Mandolin strings are grouped in pairs?

Yes, mandolin strings are typically grouped in pairs, with each pair consisting of two strings tuned to the same pitch. This setup is known as "courses," and a standard mandolin has four courses, making a total of eight strings. The paired strings enhance the instrument's volume and richness of tone. The most common tuning for a mandolin is G-D-A-E, from the lowest to the highest course.