Data Types And Variables In Ruby - Study Mode

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[#1] Which of the following is NOT a valid data type in Ruby?

(A) Integer

(B) Float

(C) Boolean

(D) Double

Correct Answer

(D) Double

[#2] What is the data type of the value 3.14 in Ruby?

(A) Integer

(B) Float

(C) String

(D) Boolean

Correct Answer

(B) Float

[#3] What is the default value of a variable in Ruby if not initialized?

(A) 0

(B) nil

(C) "undefined"

(D) FALSE

Correct Answer

(B) nil

[#4] Which symbol is used to declare a variable in Ruby?

(A) $

(B) &

(C) @

(D) #

Correct Answer

(C) @

[#5] What does the 'nil' value represent in Ruby?

(A) Empty string

(B) Null value

(C) Zero

(D) Undefined

Correct Answer

(B) Null value