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Q. What is the output of the expression: "hello" + "world" in Ruby?
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Q. In Ruby, what does the unless keyword do?
Q. Which tool is commonly used for code formatting in Ruby projects?
Q. In Ruby, what is the purpose of the module_function keyword?
Q. What is the purpose of the case statement in Ruby?
Q. What does the super keyword do in a Ruby class method?
Q. What is the method used to check the data type of a variable in Ruby?
Q. What is the purpose of the cycle method in Ruby enumerators?
Q. Which method is used to check if a variable is nil in Ruby?
Q. Objects of which class does the integer from the range -2^60 to 2^(60-1) belong to?
Q. What does the '<<' operator do when used with arrays in Ruby?
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