5 sinh viên nữ và 6 sinh viên nam giỏi toán. chọn ngẫu nhiên 1 sinh viên trong lớp. tính xác suất để sinh viên đó giỏi toán biết rằng sinh viên đó là nữ
5 female students and 6 male students good at mathematics. randomly select 1 student in class. calculate the probability that students good at math to know that there are female students
5 and 6 female students male students good at math. 1 randomly selected students in the class. calculate the probability that good at math so that students know that there are female students