Generally we use n as a counter and begin it with 1: the first term is obtained when n = 1. Thus, n must be a positive integer, 1 or greater: {1, 2, 3, ... }.
Start by finding out how many books per shelf. So divide 48 by 6, which would mean 8 books per shelf. Multiply this by 12 shelves, which gives you 96 books. Hope this helps!!
