Ruby Questions and Answers – Data Types and Variables

This set of Ruby Programming Multiple Choice Questions & Answers (MCQs) focuses on “Data Types and Variables”.

1. Which of the following datatypes are valid in Ruby?
a) Numbers
b) Boolean
c) String
d) All of the mentioned
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2. What will any variable evaluate to if it is of Boolean data type?
a) True
b) Nil
c) False
d) Either True or False
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3. Why can not we use quotation marks (‘ or “) with boolean?
a) It indicates that we are talking about a string
b) It indicates that we are assining a value
c) It indicates that that we are replacing boolean data type with string data type
d) None of the mentioned
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4. Ruby is a case-sensitive language.
a) True
b) False
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5. What is the size of an integer data type in ruby?
a) -2³⁰ to 2³⁰
b) -2³⁰ to 2^(30-1)
c) -2²⁹ to 2³⁰
d) -2⁶⁰ to 2⁶¹
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6. Ruby can deal with both numbers and floating point values.
a) True
b) False
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7. What is the output of the given code?

boolean_1 = 77<78
   puts(boolean_1)

a) Nil
b) True
c) False
d) Error
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Output:
True

8. Objects of which class does the integer from the range -2^30 to 2^(30-1) belong to?
a) Bignum
b) Octal
c) Fixnum
d) Binary
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9. What does the notataion \b stands for?
a) Escape
b) Space
c) Backspace
d) Newline
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10. What is the sequence of ruby strings?
a) 16-bit bytes
b) 8-bit bytes
c) 10-bit bytes
d) None of the mentioned
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11. What is the output of the given code?

my_string=Ruby
    puts(my_string)

a) Ruby
b) Nil
c) Error
d) None of the mentioned
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Output:
Error

12. Which of the following is not a valid datatype?
a) Float
b) Integer
c) Binary
d) Timedate
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13. What is the range of octal notation (\nnn)?
a) 0-8
b) 0-7
c) 0-A
d) None of the mentioned
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Sanfoundry Global Education & Learning Series – Ruby Programming.

To practice all areas of Ruby Programming, here is complete set of 1000+ Multiple Choice Questions and Answers.