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

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Which of the following is the correct way to define a variable in Ruby?

A) var_name = value B) var var_name = value C) name = value D) variable name = value

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Answer & Solution

Answer: Option A

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What is the method used to check if a string contains a specific substring in Ruby?

A) .contains B) .exist C) .include? D) .hasSubstring

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Answer & Solution

Answer: Option C

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What is the result of the expression: 10 % 3 in Ruby?

A) 1 B) 1.33 C) 3 D) 0

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Answer & Solution

Answer: Option A

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In Ruby, what is the keyword used to define a constant?

A) constant_name = value B) constant name : value C) CONSTANT_NAME = value D) constantName(value)

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Answer & Solution

Answer: Option C

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Which of the following is the correct way to define a range in Ruby?

A) (1..10) B) [1 to 10] C) {1..10} D) <1,10>

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Answer & Solution

Answer: Option A

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What does the 'return' keyword do in Ruby methods?

A) Exits the method with a value B) Prints to console C) Converts to integer D) Continues the loop

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Answer & Solution

Answer: Option A

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What is the correct way to declare and initialize an array in Ruby?

A) array_name = [] B) array array_name = [] C) array_name = array[] D) array = array_name[]

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Answer & Solution

Answer: Option A

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In Ruby, what is the default file extension for Ruby files?

A) .ru B) .rby C) .rb D) .ruby

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Answer & Solution

Answer: Option C

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What does the 'chomp' method do in Ruby?

A) Removes trailing whitespace B) Converts to integer C) Reads input from user D) Splits a string

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Answer & Solution

Answer: Option A

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What is the correct syntax for a multiline comment in Ruby?

A) /* ... */ B) // ... // C) ''' ... ''' D) # ... #

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Answer & Solution

Answer: Option C

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