I have to count the number of entries in a given range of cells. e.g. cell a1 to a50 (excluding the blanks). The first cell ref i.e. a1 would remain the same and the rest should progress one by one i..e. counta(a1:a1), counta (a1:a2), counta(a1:a3) and so on. I manually entered upto 5 to 6...