Why does google sheet give the error " the range name specified isn't valid. I am trying to name the cell c, because it contains the value of speed of light.
As far as i know, it does not break any of the rules for naming a named range.
You can see from the named range panel on the right, that i have named the 2 nearby cells as d and v without any problem, so why is it not accepting c ?
You can also see the list of all the named ranges that i have defined, and i have not defined any other cell as c, so there is no question of the name overlapping with that of any other cell .