Ever wanted to add up the value of the Intersecting Sets or Ranges.
I had a couple of Ranges as rowns,
eg Dept1 = Rows A1:N4 , Dept2 = Rows (A5:N6, A12:N16) etc
and then Columns Ranges for Jan, Feb
eg Jan = Column B1:B12, Feb = C1:C12 etc.
I wanted to get the sum of the Intersection between Ranges Dept1 for Jan. To do this use a Space as an operator. eg =Sum(Dept1 Jan)
Whilist everyone knows about the comma as a Union operator not many people have heard of space as an Intersect operator - see "Reference operators" in Excel help for more info