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Introduction- Scenario I
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In this lesson, we start with the basic idea of truth-teller, liar and alternator.

## Riya Agarwal is teaching live on Unacademy Plus

Riya Agarwal
I'm here to liberate & share my knowledge. Mostly, all DILR topics are covered for aptitude exams. Use code "IRIYAAGARWAL" for discount on p

U
wonderful explanation ma'am. I always had a problem with this topic but now you have cleared all my doubts.
Riya Agarwal
3 months ago
I'm glad to help.
nice explaination for the topic....i was very new to this topic
good teaching by you nice explained
1. BINARY LOGICE TRUTH-TELLER, LIAR & ALTERNATOR INTRODUCTION (SENERIo I)

2. About Me I hold a B.E degree in Electronics and Communication Engineering. . CAT, 17: DI & LR-98.29 %ile. I would take you through the DI & LR lessons for CAT. Not all are born Einstein's but trust me with hard work and dedication we can together make it possible.

3. BINARY LOGICE TRUTH-TELLER, LIAR & ALTERNATOR INTRODUCTION (SENERIo I)

4. Truth-Teller, Liar and Alternator

5. Truth-Teller, Liar and Alternator Truth-teller: Always speaks the truth. '

6. Truth-Teller, Liar and Alternator Truth-teller: Always speaks the truth. ' Liar: Always tells lies.

7. Truth-Teller, Liar and Alternator Truth-teller: Always speaks the truth. Liar: Always tells lies. Alternator: Alternatively, tells truth and lies. '

8. Truth-Teller, Liar and Alternator Truth-teller: Always speaks the truth. Liar: Always tells lies. Alternator: Alternatively, tells truth and lies. ' Note: If an Alternator gives multiple statements, then it can be in order- False, True, False, True, or True, False, True, False,...

9. Consider the followin g scenario: A person 'X' makes the following statements X:I am a liar. Y is brave.

10. Consider the followin g scenario: A person 'X' makes the following statements X:I am a liar. Y is brave. Considering X is a truth-teller

11. Consider the followin g scenario: A person 'X' makes the following statements X:l am a liar. T Y is brave. T Considering X is a truth-teller

12. Consider the followin g scenario: A person 'X' makes the following statements X:l am a liar. T Y is brave. T Considering X is a truth-teller Contradiction.

13. Consider the followin g scenario: A person 'X' makes the following statements X:I am a liar. Y is brave.

14. Consider the followin g scenario: A person 'X' makes the following statements X:l am a liar. F Y is brave. F Considering X is a Liar. Contradiction.

15. Consider the followin g scenario: A person 'X' makes the following statements X:I am a liar. Y is brave. Considering X is an Alternator.

16. Consider the followin g scenario: A person 'X' makes the following statements X:l am a liar. T Y is brave. F Considering X is an Alternator.

17. Consider the followin g scenario: A person 'X' makes the following statements X:l am a liar. T Y is brave. F Considering X is an Alternator. Contradiction.

18. Consider the followin g scenario: A person 'X' makes the following statements X:l am a liar. F Y is brave. T Considering X is an Alternator.

19. Consider the followin g scenario: Conclusion: .A person who declares himself a liar, will always be an alternator.

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