Easier one first
I want to categorise Trucks by their tanks and the 3 categories are in Type 1 column:
No SS: SS column: "No" + "Yes" in any columns X1 to X3
SS Only: SS column: "Yes" + "No" in all columns X1 to X3
Partial SS: SS column: "Yes" +"Yes" in any of X1-X3
Im assuming the formula to be used is an IF and AND.