38:38 Sikupata alichomaanisha. Y ni tofauti ya nasibu inayoonyesha muda tunaopaswa kusubiri. Na kwa muda, sivyo kuendelea? Kisha Y inapaswa pia kuwa (6: kuendelea RV). Kwa nini alitaja PMF badala ya PDF?####[['Y', 'Mathematical_Related_Concept', 'NEU'], ['PMF', 'Mathematical_Related_Concept', 'NEU'], ['PDF', 'Mathematical_Related_Concept', 'NEU'], ['NULL', 'Instructor', 'NEU'], ['(6: kuendelea', 'Mathematical_Related_Concept', 'NEU'], ['kuendelea', 'Mathematical_Related_Concept', 'NEU'], ['tofauti ya nasibu', 'Mathematical_Related_Concept', 'NEU']]