Aspire Faculty ID #16453 · Topic: NIMCET 2009 · Just now
NIMCET 2009

Three shopkeepers each make one true statement and one false statement.

Shopkeeper 1:
• Dog had black hair
• Dog had a long tail

Shopkeeper 2:
• Dog had a short tail
• Dog wore a collar

Shopkeeper 3:
• Dog had white hair
• Dog had no collar

Find correct description.

Solution

Test each option — each shopkeeper must have one truth + one lie.

Test Option (3) Black hair, long tail, A collar

Shopkeeper 1:

Black hair → TRUE

Long tail → TRUE ❌ (two truths → invalid)

Test Option (4) Black hair, long tail, No collar

Shopkeeper 1:

Black hair → TRUE

Long tail → TRUE ❌ (invalid)

Test Option (1) White hair, short tail, No collar

Shopkeeper 1:

Black hair → FALSE

Long tail → FALSE ❌ (two lies → invalid)

Test Option (2) White hair, long tail, A collar

Shopkeeper 1:

Black hair → FALSE

Long tail → TRUE ✔ (1 true, 1 false)

Shopkeeper 2:

Short tail → FALSE

Collar → TRUE ✔

Shopkeeper 3:

White hair → TRUE

No collar → FALSE ✔

All satisfy exactly one true + one false.

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