The ampersand, which is this character: &
yes
The & is the concatenation operator. It could be used like this: =A1 & A2
One on the most powerful tools in Excel is the ability to use concatenation.
No. You use the & as the concatenation character in a formula. The following will add the two pieces of text together resulting in one piece of text: ="Hello " & "World"
In Excel, you use the asterisk, "*". As to the name, I would just call it the "multiplication sign".
Java does not support object overriding. It does support operator overloading by means of the "+" symbol which is used for both numeric addition as well as string concatenation.
The less than operator is the < symbol.
No. Percent is not an operator, it is a symbol or cell format style.
percent
percent
There isn't one. It is an algebraic operation, not an arithmetic one and is called exponentiation.
For =A1+B1, the operator is the plus sign (+).