28:53 duration 28 minutes 53 seconds
Lecture 5.5 - GCD, LCM (with subtitles)
26:38 duration 26 minutes 38 seconds
Lecture 5.4 - GCD (with subtitles)
17:13 duration 17 minutes 13 seconds
Lecture 5.3 - Prime Factorization (with subtitles)