If you simply declare a variable with a Dim statement and leave off the type-declaration keyword or character, the variable is a variant

 
Sub var()
    Dim myVar
End Sub

1.	Variant string
2.	A Variant allows VBA to make its own decision as to what type of data it is holding
3.	Get the variable type for Variant
4.	One of the few instances in which you have no choice for using a Variant:
5.	A Variant allows VBA to make its own decision as to what type of data it is holding: string and integer
6.	Assign difference type variable to Variant variable
7.	Add Variant integer to Variant string
8.	Add Variant string to Variant integer
9.	Add Variant integer in string to another Variant integer in string
10.	Determining the Type of a Variant

If you simply declare a variable with a Dim statement and leave off the type-declaration keyword or character, the variable is a variant : Variant « Data Type « VBA / Excel / Access / Word