CRE 1 - Basics | LR - Binary Logic

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Answer the next 5 questions based on the information give below:

On an island there are three kinds of people

Truth-tellers: who always speak truth.
Liars: who always lie.
Alternators: who can either tell the truth or lie.

1. CRE 1 - Basics | LR - Binary Logic

Tarun says: “I am a truth-teller”. Trun is a/an:

(a)
Truth-teller
(b)
Liar
(c)
Alternator
(d)
Cannot be determined

2. CRE 1 - Basics | LR - Binary Logic

Arun says: “I am a liar”. Arun is a/an:

(a)
Truth-teller
(b)
Liar
(c)
Alternator
(d)
Cannot be determined

3. CRE 1 - Basics | LR - Binary Logic

Varun says: “I am an alternator”. Varun is definitely not a/an:

(a)
Truth-teller
(b)
Liar
(c)
Alternator
(d)
Cannot be determined

4. CRE 1 - Basics | LR - Binary Logic

Three persons (of different kinds) from this island give these statements.

GAUTAM: Umesh is a truth-teller. I am an alternator.
BHEEM: Gautam is a liar. I am a truth-teller.
UMESH: Bheem is a liar. I am an alternator.

Gautam belongs to which tribe?

(a)
Truth-teller
(b)
Liar
(c)
Alternator
(d)
Either (a) or (c)

5. CRE 1 - Basics | LR - Binary Logic

While searching for a Mechanic, Pranjal met three locals - Harsh, Akash and Raju - who always gave two replies to any question. Among them one is a truth teller, one is a liar and one is an alternator. When Pranjal asked them, "Who among you is the Mechanic?", their replies were :

Harsh: I am the Mechanic. Akash is a liar
Akash: I am the Mechanic. Raju is a liar
Raju: Akash is the Mechanic. Harsh is a liar.

Who is the mechanic?

(a)
Harsh
(b)
Akash
(c)
Raju
(d)
Either (b) or (c)

6. CRE 1 - Basics | LR - Binary Logic

Below are three statements by snooker players. At least one of the statements is false and at least one is true:

Sachin: Sourav did not pot the black.
Sourav: I did not pot the black.
Vinod: I potted the black.

If only one of them potted the ball, who potted the black?

(a)
Sachin
(b)
Sourav
(c)
Vinod
(d)
Both Sachin and Sourav

7. CRE 1 - Basics | LR - Binary Logic

Three persons A, B and C gave the following statements:

A says: Either BJP or Congress won the elections.
B says: BJP won.
C says: Neither BJP nor Congress won the elections.

Of these persons, only one person is wrong. Who won the elections?

(a)
BJP
(b)
Congress
(c)
Cannot be determined
(d)
None of these

8. CRE 1 - Basics | LR - Binary Logic

The police rounded up Ankush, Mahesh and Ganesh yesterday because one of them was suspected of robbing the local bank. The 3 suspects gave following statements after intensive questioning:

Ankush: I’m innocent.
Mahesh: I’m innocent.
Ganesh: Mahesh is the guilty one.

Who robbed the bank among the three persons, if only one of the statements will be true?

(a)
Mahesh
(b)
Ankush
(c)
Ganesh
(d)
None of these

9. CRE 1 - Basics | LR - Binary Logic

A king’s durbar consists of a knight, a spy and a knave.

Knight speaks only truth, spy can speak either a truth or a lie and the knave speaks only lies.

From the following statements made by 3 people A, B and C comprising the knight, spy and knave though not necessarily in that order, identify the spy.

A: I am knight.
B : A is not knave.
C: If you had asked me, I would say A is the spy.

(a)
A
(b)
B
(c)
C
(d)
Cannot be determined

10. CRE 1 - Basics | LR - Binary Logic

Asha and Eesha – Eesha lies on Monday, Tuesday and Wednesday. Asha lies on Thursday, Friday and Saturday. Other days they will say the truth. Professor forgot and asked them what day it is. Both of them said, yesterday I was lying and then professor got the day. What day it is?

(a)
Tuesday
(b)
Thursday
(c)
Friday
(d)
Cannot be determined

CRE 1 - Basics | LR - Binary Logic

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