conditional_logic_puzzle - Absolute-Beginner Level: core concept mastery conditional_logic_puzzle ABSOLUTE BEGINNER

Given: If Rahul is a truth-teller

Step 1: Rahul tells truth → 'Rohan is liar' is true → Rohan is liar.
Step 2: Rohan (liar) says 'Anita is truth-teller' → this statement is false → Anita is liar.
Step 3: Anita (liar) says 'Manoj and I are different types' → this statement is false → Manoj is SAME type as Anita → Manoj is liar.
Step 4: Manoj (liar) says 'Rahul is truth-teller' → this statement is false → Rahul is liar → CONTRADICTION with our assumption!

This shows that Rahul CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Rahul is truth-teller, who MUST be a liar? From step 1, Rohan must be a liar.

Therefore, under the given condition, Rohan must be a liar.

Given: If Rahul is a truth-teller

Step 1: Rahul tells truth → 'Divya is liar' is true → Divya is liar.
Step 2: Divya (liar) says 'Neha is truth-teller' → this statement is false → Neha is liar.
Step 3: Neha (liar) says 'Amit and I are different types' → this statement is false → Amit is SAME type as Neha → Amit is liar.
Step 4: Amit (liar) says 'Rahul is truth-teller' → this statement is false → Rahul is liar → CONTRADICTION with our assumption!

This shows that Rahul CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Rahul is truth-teller, who MUST be a liar? From step 1, Divya must be a liar.

Therefore, under the given condition, Divya must be a liar.

Given: If Leena is a truth-teller

Step 1: Leena tells truth → 'Priya is liar' is true → Priya is liar.
Step 2: Priya (liar) says 'Meera is truth-teller' → this statement is false → Meera is liar.
Step 3: Meera (liar) says 'Deepa and I are different types' → this statement is false → Deepa is SAME type as Meera → Deepa is liar.
Step 4: Deepa (liar) says 'Leena is truth-teller' → this statement is false → Leena is liar → CONTRADICTION with our assumption!

This shows that Leena CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Leena is truth-teller, who MUST be a liar? From step 1, Priya must be a liar.

Therefore, under the given condition, Priya must be a liar.

Given: If Anita is a truth-teller

Step 1: Anita tells truth → 'Farhan is liar' is true → Farhan is liar.
Step 2: Farhan (liar) says 'Kiran is truth-teller' → this statement is false → Kiran is liar.
Step 3: Kiran (liar) says 'Gaurav and I are different types' → this statement is false → Gaurav is SAME type as Kiran → Gaurav is liar.
Step 4: Gaurav (liar) says 'Anita is truth-teller' → this statement is false → Anita is liar → CONTRADICTION with our assumption!

This shows that Anita CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Anita is truth-teller, who MUST be a liar? From step 1, Farhan must be a liar.

Therefore, under the given condition, Farhan must be a liar.

Given: If Vikram is a truth-teller

Step 1: Vikram tells truth → 'Neha is liar' is true → Neha is liar.
Step 2: Neha (liar) says 'Kiran is truth-teller' → this statement is false → Kiran is liar.
Step 3: Kiran (liar) says 'Ravi and I are different types' → this statement is false → Ravi is SAME type as Kiran → Ravi is liar.
Step 4: Ravi (liar) says 'Vikram is truth-teller' → this statement is false → Vikram is liar → CONTRADICTION with our assumption!

This shows that Vikram CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Vikram is truth-teller, who MUST be a liar? From step 1, Neha must be a liar.

Therefore, under the given condition, Neha must be a liar.

Given: If Farhan is a truth-teller

Step 1: Farhan tells truth → 'Deepa is liar' is true → Deepa is liar.
Step 2: Deepa (liar) says 'Leena is truth-teller' → this statement is false → Leena is liar.
Step 3: Leena (liar) says 'Neha and I are different types' → this statement is false → Neha is SAME type as Leena → Neha is liar.
Step 4: Neha (liar) says 'Farhan is truth-teller' → this statement is false → Farhan is liar → CONTRADICTION with our assumption!

This shows that Farhan CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Farhan is truth-teller, who MUST be a liar? From step 1, Deepa must be a liar.

Therefore, under the given condition, Deepa must be a liar.

Given: If Sanjay is a truth-teller

Step 1: Sanjay tells truth → 'Priya is liar' is true → Priya is liar.
Step 2: Priya (liar) says 'Pooja is truth-teller' → this statement is false → Pooja is liar.
Step 3: Pooja (liar) says 'Gaurav and I are different types' → this statement is false → Gaurav is SAME type as Pooja → Gaurav is liar.
Step 4: Gaurav (liar) says 'Sanjay is truth-teller' → this statement is false → Sanjay is liar → CONTRADICTION with our assumption!

This shows that Sanjay CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Sanjay is truth-teller, who MUST be a liar? From step 1, Priya must be a liar.

Therefore, under the given condition, Priya must be a liar.

Given: If Harsha is a truth-teller

Step 1: Harsha tells truth → 'Farhan is liar' is true → Farhan is liar.
Step 2: Farhan (liar) says 'Neha is truth-teller' → this statement is false → Neha is liar.
Step 3: Neha (liar) says 'Amit and I are different types' → this statement is false → Amit is SAME type as Neha → Amit is liar.
Step 4: Amit (liar) says 'Harsha is truth-teller' → this statement is false → Harsha is liar → CONTRADICTION with our assumption!

This shows that Harsha CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Harsha is truth-teller, who MUST be a liar? From step 1, Farhan must be a liar.

Therefore, under the given condition, Farhan must be a liar.

Given: If Amit is a truth-teller

Step 1: Amit tells truth → 'Divya is liar' is true → Divya is liar.
Step 2: Divya (liar) says 'Kiran is truth-teller' → this statement is false → Kiran is liar.
Step 3: Kiran (liar) says 'Rohan and I are different types' → this statement is false → Rohan is SAME type as Kiran → Rohan is liar.
Step 4: Rohan (liar) says 'Amit is truth-teller' → this statement is false → Amit is liar → CONTRADICTION with our assumption!

This shows that Amit CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Amit is truth-teller, who MUST be a liar? From step 1, Divya must be a liar.

Therefore, under the given condition, Divya must be a liar.

Given: If Amit is a truth-teller

Step 1: Amit tells truth → 'Rohan is liar' is true → Rohan is liar.
Step 2: Rohan (liar) says 'Anita is truth-teller' → this statement is false → Anita is liar.
Step 3: Anita (liar) says 'Neha and I are different types' → this statement is false → Neha is SAME type as Anita → Neha is liar.
Step 4: Neha (liar) says 'Amit is truth-teller' → this statement is false → Amit is liar → CONTRADICTION with our assumption!

This shows that Amit CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Amit is truth-teller, who MUST be a liar? From step 1, Rohan must be a liar.

Therefore, under the given condition, Rohan must be a liar.

Given: If Harsha is a truth-teller

Step 1: Harsha tells truth → 'Manoj is liar' is true → Manoj is liar.
Step 2: Manoj (liar) says 'Anita is truth-teller' → this statement is false → Anita is liar.
Step 3: Anita (liar) says 'Rahul and I are different types' → this statement is false → Rahul is SAME type as Anita → Rahul is liar.
Step 4: Rahul (liar) says 'Harsha is truth-teller' → this statement is false → Harsha is liar → CONTRADICTION with our assumption!

This shows that Harsha CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Harsha is truth-teller, who MUST be a liar? From step 1, Manoj must be a liar.

Therefore, under the given condition, Manoj must be a liar.

Given: If Kiran is a truth-teller

Step 1: Kiran tells truth → 'Ravi is liar' is true → Ravi is liar.
Step 2: Ravi (liar) says 'Meera is truth-teller' → this statement is false → Meera is liar.
Step 3: Meera (liar) says 'Gaurav and I are different types' → this statement is false → Gaurav is SAME type as Meera → Gaurav is liar.
Step 4: Gaurav (liar) says 'Kiran is truth-teller' → this statement is false → Kiran is liar → CONTRADICTION with our assumption!

This shows that Kiran CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Kiran is truth-teller, who MUST be a liar? From step 1, Ravi must be a liar.

Therefore, under the given condition, Ravi must be a liar.

Given: If Pooja is a truth-teller

Step 1: Pooja tells truth → 'Anita is liar' is true → Anita is liar.
Step 2: Anita (liar) says 'Farhan is truth-teller' → this statement is false → Farhan is liar.
Step 3: Farhan (liar) says 'Rahul and I are different types' → this statement is false → Rahul is SAME type as Farhan → Rahul is liar.
Step 4: Rahul (liar) says 'Pooja is truth-teller' → this statement is false → Pooja is liar → CONTRADICTION with our assumption!

This shows that Pooja CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Pooja is truth-teller, who MUST be a liar? From step 1, Anita must be a liar.

Therefore, under the given condition, Anita must be a liar.

Given: If Leena is a truth-teller

Step 1: Leena tells truth → 'Gaurav is liar' is true → Gaurav is liar.
Step 2: Gaurav (liar) says 'Deepa is truth-teller' → this statement is false → Deepa is liar.
Step 3: Deepa (liar) says 'Manoj and I are different types' → this statement is false → Manoj is SAME type as Deepa → Manoj is liar.
Step 4: Manoj (liar) says 'Leena is truth-teller' → this statement is false → Leena is liar → CONTRADICTION with our assumption!

This shows that Leena CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Leena is truth-teller, who MUST be a liar? From step 1, Gaurav must be a liar.

Therefore, under the given condition, Gaurav must be a liar.

Given: If Deepa is a truth-teller

Step 1: Deepa tells truth → 'Rahul is liar' is true → Rahul is liar.
Step 2: Rahul (liar) says 'Sanjay is truth-teller' → this statement is false → Sanjay is liar.
Step 3: Sanjay (liar) says 'Divya and I are different types' → this statement is false → Divya is SAME type as Sanjay → Divya is liar.
Step 4: Divya (liar) says 'Deepa is truth-teller' → this statement is false → Deepa is liar → CONTRADICTION with our assumption!

This shows that Deepa CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Deepa is truth-teller, who MUST be a liar? From step 1, Rahul must be a liar.

Therefore, under the given condition, Rahul must be a liar.

Given: If Rahul is a truth-teller

Step 1: Rahul tells truth → 'Sunil is liar' is true → Sunil is liar.
Step 2: Sunil (liar) says 'Rohan is truth-teller' → this statement is false → Rohan is liar.
Step 3: Rohan (liar) says 'Harsha and I are different types' → this statement is false → Harsha is SAME type as Rohan → Harsha is liar.
Step 4: Harsha (liar) says 'Rahul is truth-teller' → this statement is false → Rahul is liar → CONTRADICTION with our assumption!

This shows that Rahul CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Rahul is truth-teller, who MUST be a liar? From step 1, Sunil must be a liar.

Therefore, under the given condition, Sunil must be a liar.

Given: If Farhan is a truth-teller

Step 1: Farhan tells truth → 'Harsha is liar' is true → Harsha is liar.
Step 2: Harsha (liar) says 'Neha is truth-teller' → this statement is false → Neha is liar.
Step 3: Neha (liar) says 'Rohan and I are different types' → this statement is false → Rohan is SAME type as Neha → Rohan is liar.
Step 4: Rohan (liar) says 'Farhan is truth-teller' → this statement is false → Farhan is liar → CONTRADICTION with our assumption!

This shows that Farhan CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Farhan is truth-teller, who MUST be a liar? From step 1, Harsha must be a liar.

Therefore, under the given condition, Harsha must be a liar.

Given: If Kiran is a truth-teller

Step 1: Kiran tells truth → 'Amit is liar' is true → Amit is liar.
Step 2: Amit (liar) says 'Rahul is truth-teller' → this statement is false → Rahul is liar.
Step 3: Rahul (liar) says 'Neha and I are different types' → this statement is false → Neha is SAME type as Rahul → Neha is liar.
Step 4: Neha (liar) says 'Kiran is truth-teller' → this statement is false → Kiran is liar → CONTRADICTION with our assumption!

This shows that Kiran CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Kiran is truth-teller, who MUST be a liar? From step 1, Amit must be a liar.

Therefore, under the given condition, Amit must be a liar.

Given: If Meera is a truth-teller

Step 1: Meera tells truth → 'Harsha is liar' is true → Harsha is liar.
Step 2: Harsha (liar) says 'Farhan is truth-teller' → this statement is false → Farhan is liar.
Step 3: Farhan (liar) says 'Sunil and I are different types' → this statement is false → Sunil is SAME type as Farhan → Sunil is liar.
Step 4: Sunil (liar) says 'Meera is truth-teller' → this statement is false → Meera is liar → CONTRADICTION with our assumption!

This shows that Meera CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Meera is truth-teller, who MUST be a liar? From step 1, Harsha must be a liar.

Therefore, under the given condition, Harsha must be a liar.

Given: If Deepa is a truth-teller

Step 1: Deepa tells truth → 'Rahul is liar' is true → Rahul is liar.
Step 2: Rahul (liar) says 'Kiran is truth-teller' → this statement is false → Kiran is liar.
Step 3: Kiran (liar) says 'Sunil and I are different types' → this statement is false → Sunil is SAME type as Kiran → Sunil is liar.
Step 4: Sunil (liar) says 'Deepa is truth-teller' → this statement is false → Deepa is liar → CONTRADICTION with our assumption!

This shows that Deepa CANNOT be a truth-teller under these statements.
However, the conditional question asks: IF we assume Deepa is truth-teller, who MUST be a liar? From step 1, Rahul must be a liar.

Therefore, under the given condition, Rahul must be a liar.