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Is an interface a type ?
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4
What does the following code return ?7
Can a class implements several interfaces ?5
When can you do a+b in OOP ?10
Inheritance in OOP.13
Overrided method visibility must be the same or less restrictive than the inherited method.4
Explain the difference between overriding and overloading in OOP.3
Which modification of the following code WILL NOT make the output be "success" ?