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String concatenation in very simple terms is the joining of two strings.  

'''String concatenation''' in very simple terms is the joining of two strings.  

A string is a group of characters that can be alphabetic, numeric or special characters.  

A string is a group of characters that can be [[alphabet]]ic, numeric or special characters.  

A numeric string must be converted to a numeric type before it can be used in calculations.  

A numeric string must be converted to a numeric type before it can be used in calculations.