55 fiveMisc 21 Find the sum of the following series upto n terms: (i) 5 + 55 + 555 + This is not GP but it can relate it to a GP by writing as Sum = 5 + 55 + 555 +.. to n terms =Fifty-five is a natural number. It is one of those numbers used for counting. It is one of those numbers used for counting. It comes between fifty-four and fifty-six .