MCQ question

Level 2

The white rabbit tells that the cat lies.The cat tells that Alice lies.Alice tells that the white rabbit and the cat lie.Who tell the truth? name : white rabbit : 1 cat : 2 Alice : 3


The answer is 2.

Cristian Corina Margareta by Cristian Corina Margareta , 54

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2 solutions

Swapnil Das
Apr 18, 2015

Hello. Well simple logic is the only solution, but just a suggestion. There are 3 chances for any user to type the numbers and You have provided 3 options. Please make this a MCQ question.

3 Helpful 0 Interesting 0 Brilliant 0 Confused

@Swapnil Das I feel the same way too.

Noel Lo - 5 years, 10 months ago
Venture Hi
Apr 18, 2015

Since we are looking for the truth teller, we can conduct a simple test and check for consistency.

If rabbit tells the truth, then the cat is truly a liar, and this means Alice is actually telling the truth: that Rabbit and Cat are liars. So there is a contradiction.

Next, if Cat is telling the truth, while the other two are lying, then the cat is really telling the truth , and both rabbit and Alice statement confirms it. No contradiction. So Cat is the truth teller!

Lastly, just for the purpose of testing it out, assume Alice is truthful and the other two is telling lieS. If Alice is truthful, rabbit and cat are liars. This imply the Cat is telling the truth, and that also imply Rabbit and Cat also tells truth. Contradiction! They all cant be truthful.

2 Helpful 0 Interesting 0 Brilliant 0 Confused

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