The simplest and best way is:
=SUM(C1:C14)
Assuming you mean a cell in a spreadsheet program, when the contents are displayed as #####, it usually means the cell is not wide enough to display the contents. One way to widen the cell is to click and drag the mouse pointer at the edge of the column header. Another is to select the column and change the column width.
The duration of Nelson's Column - TV series - is 1800.0 seconds.
Nelson's Column - TV series - was created on 1994-02-17.
Nelson's Column - TV series - ended on 1995-07-31.
False
True
False
Not all column charts can be converted to pie charts. It can only be done if the column chart has a single series, as a pie chart can only have one series. If the column chart has more than one series, only one series will be shown when it becomes a pie chart. If the column chart has a single series then going to the Chart menu and choosing Chart type will enable you to change it.
A clustered column chart is where you have different coloured columns for each category/series, whereas a stacked is where you have one column with different categories/series stacked up on the one column, i.e. will look like a column of many colours.
True
The engine cover should have it displayed.
Y