This is the 5827th most frequent Spanish word.
solos
"Alone" or "by themselves."
In this sentence, "solos" is used as an adjective meaning 'alone' describing the subject 'we', indicating a situation of solitude.
Estamos solos en casa.
We are alone at home.
Here, "solos" is used adjectivally to emphasize that 'they' acted independently, without external assistance.
Ellos solos lograron resolver el problema.
They by themselves managed to solve the problem.
In this context, "solo" modifies the subject 'students with experience', functioning as an adverb meaning 'only', [different from plural "solos"].