question #2 Sahih Muslim 705f, Book 6, Hadith 66 : How many rak’ahs are involved when combining the noon and afternoon prayers, and the sunset and ‘Isha’ prayers?

Ibn ‘Abbas reported that the Messenger of Allah (ﷺ) observed in Medina seven (rak’ahs) and eight (rak’ahs), i. e. (be combined) the noon and afternoon prayers (eight rak’ahs) and the sunset and ‘Isha’ prayers (seven rak’ahs).