The document outlines various problem statements for a national mobile app development hackathon in Bangladesh, covering issues such as traffic management, exam paper leaks, sanitation, cyclone shelter management, sexual harassment, non-communicable diseases, water transport safety, corruption, sexual and reproductive health, and road safety. Each problem statement includes suggestions for technological solutions aimed at raising public awareness and promoting behavioral change. The initiative emphasizes the need for innovative and practical applications to address these critical societal challenges.