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Operators : Ruby MCQ Practice Questions & Answers (Telugu) - ObjectiveMcq

Ruby Practice

All Practice

Topics

Arrays
Arrays Of Arrays
Assignment Operators
Basics
Comments In Ruby
Comparisons
Data Types And Variables
For Loop
Formatting String Methods
General
Library Functions
Operators
Ruby Programming
String Methods
The Case Conditional Statement
The Else Conditional Statement
The Elsif Conditional Statement
The If Conditional Statement
Until Loop
While Loop

PracticeRubyOperators

Operators in Ruby : Practice MCQ Questions & Answers with Explanations

7 practice sets · Page 1 of 1

RubyMediumOperators

What will the following expression evaluate to !true && !false

True

False

Error

None of the mentioned

Correct Answer:

(B) False

Explanation:

Boolean operator && evaluates to true only when both the values are true.

RubyMediumOperators

What will the following expression evaluate to (true && false) || (!true)

True

False

Error

None of the mentioned

Correct Answer:

(B) False

Explanation:

Boolean operator && evaluates to true only when both the values are true and !true means false hence the whole expression will evaluate to false.

RubyMediumOperators

What will the following expression evaluate to true || false

True

False

Error

None of the mentioned

Correct Answer:

(A) True

Explanation:

Boolean operator || evaluates to true only when both the values are true or one is true and other is false.

RubyMediumOperators

What will the following expression evaluate to true && false

True

False

Error

None of the mentioned

Correct Answer:

(B) False

Explanation:

Boolean operator && evaluates to true only when both the values are true.

RubyMediumOperators

The boolean operator && only result in true when both the values are true?

True

False

Correct Answer:

(A) True

Explanation:

The && operator only results in true when both the values are true rest all cases it evaluates to false.

RubyMediumOperators

Which of the following is a valid boolean operator?

and(&&)

or(||)

not(!)

All of the mentioned

Correct Answer:

(D) All of the mentioned

Explanation:

We have three boolean operators which are and, or, not.

RubyMediumOperators

Boolean opeartors are also known as logical operators.

True

False

Correct Answer:

(A) True

Explanation:

Boolean operators result in boolean values like true or false.