a group of ballet dancers are practicing a formation on stage. The first row has one dancer and each additional row
has two more dancers than the previous row. If there are 25 dancers, how many rows can they form?
Each row will have an odd number of dancers where a successive row has two more than the previous one.......
The sum of the first N odd numbers = N^2
So.....we want to know when........
N^2 <= 25
N <= 5
So....we need 5 rows
