5776 students are sitting in an auditorium in such a manner that there are as many as students in a row as there are rows in the auditorium.. How many rows are there in the
auditorium?(76)

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.