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Q. What is the purpose of the `public` keyword in Ruby?
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Q. Which of the following is a valid way to declare a variable in Ruby?
Q. What does the attr_accessor method do in Ruby?
Q. Constants in ruby begin with ?
Q. How do you find the difference in seconds between two Time objects in Ruby?
Q. Which modifier is used to perform multiline matching in Ruby regular expressions?
Q. In Ruby, what does it mean to "freeze" an object?
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