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These are symbols that are used to perform operations on operands.

(a)  

When used on strings, the (a)   is called the concatenation operator

It is a symbol for assignment operator.

(a)  

These are used to perform arithmetic on numbers.

(a)  

Redeclaring a JavaScript var variable is (a)   anywhere in a program

The (a)   (=)assigned a value to a variable

the (a)   operator(*) multiples number

to assign values to JavaScript variables

(a)  

operator (+=) adds a value to a variable.

(a)  

an operator can also be used to add (concatenate) strings

(a)