Data Types and Variables in Ruby MCQ question and answer with solution

11.
What is the result of the expression: 5 / 2 in Ruby?

A. 2

B. 2.5

C. 3

D. 3.5

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12.
Which of the following is the correct way to declare a constant in Ruby?

A. CONSTANT_NAME = value

B. constant_name : value

C. constant_name = value

D. constantName(value)

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13.
Which method is used to check if a variable is nil in Ruby?

A. .is_nil?

B. .nil?

C. .empty?

D. .null?

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14.
What is the method used to check the data type of a variable in Ruby?

A. .type

B. .typeof

C. .class

D. .datatype

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15.
What is the output of the expression: "5" + "2" in Ruby?

A. "7"

B. 7

C. 52

D. Error

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16.
What is the method used to check if a variable is defined in Ruby?

A. .is_defined?

B. .defined?

C. .exist?

D. .has_value?

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17.
What is the correct syntax to declare and initialize a variable in Ruby?

A. var_name = value

B. var var_name = value

C. variable var_name = value

D. variable_name = value

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18.
Which of the following is a valid way to declare a variable in Ruby?

A. myVar = 10

B. 10 = myVar

C. myVar

D. myVar = "10"

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19.
What is the data type of the value "Hello, World" in Ruby?

A. Integer

B. Float

C. String

D. Boolean

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20.
What is the method used to check if a variable is empty in Ruby?

A. .empty?

B. .is_empty?

C. .null?

D. .has_content?

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Data Types and Variables in Ruby MCQ question and answer with solution | Ruby Programming MCQs

11. What is the result of the expression: 5 / 2 in Ruby?

Answer & Solution

12. Which of the following is the correct way to declare a constant in Ruby?

Answer & Solution

13. Which method is used to check if a variable is nil in Ruby?

Answer & Solution

14. What is the method used to check the data type of a variable in Ruby?

Answer & Solution

15. What is the output of the expression: "5" + "2" in Ruby?

Answer & Solution

16. What is the method used to check if a variable is defined in Ruby?

Answer & Solution

17. What is the correct syntax to declare and initialize a variable in Ruby?

Answer & Solution

18. Which of the following is a valid way to declare a variable in Ruby?

Answer & Solution

19. What is the data type of the value "Hello, World" in Ruby?

Answer & Solution

20. What is the method used to check if a variable is empty in Ruby?

Answer & Solution

11.
What is the result of the expression: 5 / 2 in Ruby?

12.
Which of the following is the correct way to declare a constant in Ruby?

13.
Which method is used to check if a variable is nil in Ruby?

14.
What is the method used to check the data type of a variable in Ruby?

15.
What is the output of the expression: "5" + "2" in Ruby?

16.
What is the method used to check if a variable is defined in Ruby?

17.
What is the correct syntax to declare and initialize a variable in Ruby?

18.
Which of the following is a valid way to declare a variable in Ruby?

19.
What is the data type of the value "Hello, World" in Ruby?

20.
What is the method used to check if a variable is empty in Ruby?