The Holy Quran (القرآن الكريم) contains exactly 114 سورة (surahs/chapters). These surahs vary greatly in length, from the shortest, Surah Al-Kawthar (الكوثر), which has only 3 verses, to the longest, Surah Al-Baqarah (البقرة), which has 286 verses. The surahs are broadly classified into two groups: سور مكية (Makki surahs), revealed in Makkah before the Hijra, and سور مدنية (Madani surahs), revealed in Madinah after the Hijra.
The number 114 is a well-established fact in Islamic knowledge and is agreed upon by all scholars. The surahs are arranged in the Quran not in the order of their revelation but in a specific arrangement known as the ترتيب توقيفي (divinely ordained arrangement), beginning with Surah Al-Fatiha (الفاتحة) and ending with Surah An-Nas (الناس).
The other numbers offered are all incorrect. There are neither 120, nor 100, nor 90 surahs in the Quran. This is a foundational piece of knowledge in Islamic studies (الثقافة الإسلامية) that every student should commit to memory.
