Ruby MCQs with answers Page - 9

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Q. Each element in an array is associated with _______.

  • (A) Numbers
  • (B) Index
  • (C) Integer
  • (D) None of the above

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Q. Array indexing in ruby starts at_________.

  • (A) -1
  • (B) 1
  • (C) 0
  • (D) Random number

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Q. In Ruby, Array index -1 represent ______.

  • (A) First Element
  • (B) Last element
  • (C) Middle element
  • (D) Reverse the array

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Q. Which of the following is correct syntax to create an array in ruby?

  • (A) names = Array.new
  • (B) names = Array.new(20)
  • (C) Both A and B
  • (D) None of the above

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Q. What will be the output of the given ruby code?

Code:
digits = Array(0...9)
puts #{digits}
  • (A) [0, 1, 2, 3, 4, 5, 6, 7, 8]
  • (B) [0, 1, 2, 3, 4, 5, 6, 7, 8]
  • (C) [0, 1, 2, 3, 4, 5, 6, 7, 8,9]
  • (D) [1, 2, 3, 4, 5, 6, 7, 8]

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Q. What will be the output of the given ruby code?

Code:
digits = Array(0..9)
num = digits.at(6)
puts #{num}
  • (A) 5
  • (B) 6
  • (C) 7
  • (D) 8

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Q. What will be the output of the given ruby code?

  • (A) ABC
  • (B) abc
  • (C) BCD
  • (D) bcd

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Q. What will be the output of the given ruby code?

Code:
arr = [1, 2, 3, 4]
print arr
  • (A) [1, 2, 3, 4]
  • (B) 1234
  • (C) error
  • (D) Infinite Loop

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Q. What will be the output of the given ruby code?

Code:
string_array = [a,e,i,o,u]
print string_array
  • (A) Error
  • (B) ["a","e","i","o","u"]
  • (C) aeiou
  • (D) Infinite Loop

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Q. What will be the output of the given ruby code?

Code:
arr = [[0,0,0,0],[0,0,0,0],[0,0,0,0],[0,0,0,0]]
print arr
  • (A) [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]].
  • (B) [0, 0, 0, 0][0, 0, 0, 0]
  • (C) [0, 0, 0, 0]
  • (D) error

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