Bihar board 2025 exam syllabus class 12 July 8, 2019 16 32 64 128 Bihar board exam date 2025 class 12 science syllabus Bihar board exam date 2025 class 12 commerce syllabus Class 12th bihar board exam date 2025 syllabus Бригада 12 qism uzbek tilida Beshariq 13 maktab
