In the Court of Law #3 (Solution)

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In this complex situation, we must convince the court that we didn’t commit the crime, no matter whether we were a truth teller, liar, or normal. So, we have to make a statement which proves it.

“A truth teller didn’t commit the crime” –it prove it if only we were a truth teller or a liar, just like explanation in previous cases.

But, what if we were normal? Can it prove, too? Let’s check it!

No matter whether we’re a truth teller or a liar, it can prove. What about normal? Normal means that we can reverse whenever we want. In other words, we could be a truth teller or liar. It’s similar to our first-two conditions (true truth teller or true liar). Means, it can prove, too.

So, a sentence which can prove our innocent is “A truth teller didn’t commit the crime.”

P.S.: This brain teaser I copied from Brain Teasers (http://brainden.com/logic-problems.htm). Just on click on that link, then you’ll get more brain teasers to tease your brain or even just to ease your boring day. When you get stuck, you can visit brain teasers forum to get extra “clues” from them whom have tried to solve it (but for me, it’s better to do it by myself as I did in solving this quiz).

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In the Court of Law #2 (Solution)

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this pic taken from http://www.istockphoto.com/.

Review:

A man accused of a crime, hired an attorney whose statements were always admitted by the court as undisputable truth. The following exchange took place in court.

Prosecutor: “If the accused committed the crime, he had an accomplice.”

Defender: “That is not true!”

Did the attorney help his client?

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In the Court of Law #1 (Solution)

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this pic was taken from http://www.istockphoto.com.

A prisoner at the bar was allowed to say one sentence to defend himself. After a while he said, “A swindlecant committed the crime.” Did it rescue him?

One thing that could rescue the prisoner is if he could convince that he did not commit the crime. He said that a swindlecant committed the crime (or in other words, an honestant did not commit the crime). So far, we don’t know whether he is an honestant or a swindlecant, nor whether he committed the crime or not. But we know that there are 4 possibilities as below:

Now we can see that whether he’s an honestant or a swindlecant, he didn’t commit the crime. And it rescued him.

P.S.: This brain teaser I copied from Brain Teasers (http://brainden.com/logic-problems.htm). Just on click on that link, then you’ll get more brain teasers to tease your brain or even just to ease your boring day. When you get stuck, you can visit brain teasers forum to get extra “clues” from them whom have tried to solve it (but for me, it’s better to do it by myself as I did in solving this quiz).

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Lion and Unicorn #2 (Solution)

this pic was taken from http://www.istockphoto.com.

Lion said, “Yesterday I was lying and two days after tomorrow I will be lying again.”

Which day did he say that?

To know what day he said that, let’s check his lying schedule first.

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Lion and Unicorn #1 (Solution)

Let’s review the situation give!

these pic were taken from http://www.istockphoto.com.

In a forest of forgetfulness, there were lion and unicorn. The lion lies every Monday, Tuesday and Wednesday and the other days he speaks the truth. The unicorn lies on Thursdays, Fridays and Saturdays, however the other days of the week he speaks the truth.

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Pandora's Box #2 (Solution)

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It’s said that there are 3 inscriptions as follow:

• Golden box: “The ring is not in the silver box.”
• Silver box: “The ring is not in this box.”
• Lead box: “The ring is in this box.”

And at least one inscription is true and at least one is false.

Once we read, those inscriptions seem telling us that the ring is hidden in the lead box (in case of all three inscriptions are right). As we know that there must be 1 true inscription and 1 false inscription, so that we can’t say that the ring “must be” in the lead box (but it “can be”).

Just like solving the first Pandora’s logic problem, we’ve got to know status of each inscription. There will be 6 possibilities as follow:

• 2 inscriptions are true, 1 inscription is false (3 possibilities)

• 1 inscriptions is true, 2 inscriptions are false (3 possibilities)

To know which possibility shows the fact, (just like in solving Pandora’s box #1, in this case) we’ve got to synchronize inscriptions in each possibility (and you’ve learn how to do it). Let’s see my work:

So, we’ve just known that the 1^st possibility shows the fact, and that is:

• Golden box: “The ring is not in the silver box.”
• Silver box: “The ring is not in this box.”
• Lead box: “The ring is not in this box.”
• And the wedding ring is in the golden box.

This brain teaser I copied from Brain Teasers (http://brainden.com/logic-problems.htm). Just on click on that link, then you’ll get more brain teasers to tease your brain or even just to ease your boring day. When you get stuck, you can visit brain teasers forum to get extra “clues” from them whom have tried to solve it (but for me, it’s better to do it by myself as I did in solving this quiz).

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Pandora's Box #1 (Solution)

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Here we got 3 inscriptions which only 1 or none of them is true. To know where the wedding ring is hidden, we’ve got to know first which inscription is true and which one is false. There are 4 possibilities for that:

If the inscription is true, just read as it’s written. But if it’s false, we’ve got to negate it by adding “not” (if it’s a positive sentence) or deleting “not” (if it’s a negative sentence). Then, synchronize those three inscriptions. If they aren’t synchronic, delete that possibility. But if they are, then you’ll know where the wedding ring is.

So, we’ll know that the fact is:

• Golden box: “The ring is not in this box.”
• Silver box: “The ring is in this box.”
• Lead box: “The ring is not in the golden box.”
• And the wedding ring is in the silver box.

This brain teaser I copied from Brain Teasers (http://brainden.com/logic-problems.htm). Just on click on that link, then you’ll get more brain teasers to tease your brain or even just to ease your boring day. When you get stuck, you can visit brain teasers forum to get extra “clues” from them whom have tried to solve it (but for me, it’s better to do it by myself as I did in solving this quiz).

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Einstein's Riddles: Ships (Solution)

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Just like Neighbors (another Einstein’s riddle), we have 5 groups which each group has 5 different variables. In this case, there are 5 ships anchored in a port. Each ship comes from different country and has different time departure, kind of loads, color of chimney, and destination.

Based on the clue, we can draw as below:

We’ll see that the ship which goes to Port Said is the 5th one, while the ship which carries tea is the 1st one.

This brain teaser I copied from Brain Teasers (http://brainden.com/einsteins-riddles.htm). Just on click on that link, then you’ll get more brain teasers to tease your brain or even just to ease your boring day. When you get stuck, you can visit brain teasers forum to get extra “clues” from them whom have tried to solve it (but for me, it’s better to do it by myself as I did in solving this quiz).

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Einstein's Riddles: Neighbors (Solution)

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It’s said that there are 5 groups (=houses) live side by side in a row, which each house has 5 variables consist of color of house, nationality of occupant, pet, drink, and brand of cigarette. Based on the clue, we can draw as below:

We’ll see that fish must be in the 5th house. And of course I’m one of the 2%.

This brain teaser I copied from Brain Teasers (http://brainden.com/einsteins-riddles.htm). Just on click on that link, then you’ll get more brain teasers to tease your brain or even just to ease your boring day. When you get stuck, you can visit brain teasers forum to get extra “clues” from them whom have tried to solve it (but for me, it’s better to do it by myself as I did in solving this quiz).

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Island Baal (Solution)

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Here, we have two objects to identified as who is who.

A said, “B is a lying monkey. I am human.”

B said, “A is telling the truth.”

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Honestants and Swindlecants #10 (Solution)

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There are only rich or poor people on that island. An aborigine girl wanted just a rich Swindlecant. If you were a rich Swindlecant, how would you convince her saying only one sentence? And what if she wanted a rich Honestant (and if you were one).

Okay, there are 2 if-conditions here:

You’re a rich Swindlecant

You’re a rich Honestant

And you’ve got to convice her who you were.

Here, I want to make it easy, so I combine those if-conditions, then it will be:

Whether you’re an Honestant or a Swindlecant, you’re rich.

If we want to make a sentence telling that fact, we can use “Only if…, then…”. We can fill the first blank (after “only if”) by Honestant or Swindlecant. But for the second blank (after “then”), we fill it by fact (for this case is “rich”). So, a sentence you can use to convince her to choose you is “Only if I’m an Honestant, then I’m rich”.

If you’re not sure with that answer, let’s check!

The sentence is:

“Only if I’m an Honestant, then I’m rich.”

In other words:

“Only if I’m a Swindlecant, then I’m poor.”

See? Whether you’re an Honestant or a Swindlecant, you’re rich. And you’re the one she wanted.

So, a sentence you can use to convince her to choose you is “Only if I’m an Honestant, then I’m rich”.

P.S.: This brain teaser I copied from Brain Teasers (http://brainden.com/logic-problems.htm). Just on click on that link, then you’ll get more brain teasers to tease your brain or even just to ease your boring day. When you get stuck, you can visit brain teasers forum to get extra “clues” from them whom have tried to solve it (but for me, it’s better to do it by myself as I did in solving this quiz).

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Honestants and Swindlecants #9 (Solution)

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It’s said that the gringo asked one of two aborigines whom wanted to talk to him, “Is at least one of you an Honestant?” After the answer, there was no doubt. Who are they and who answered?

Let’s analyze!

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Honestants and Swindlecants #8 (Solution)

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In this case, the gringo wanted to know what day it was, so he asked four aborigines and got different answers:

A: Yesterday was Wednesday (today is Thursday).

B: Tomorrow will be Sunday (today is Saturday).

C: Today is Friday.

D: The day before yesterday was Thursday (today is Saturday).

Here, we need to know how many people lied in order to know what day of the week it was. But we got no clue about how many people lied nor who lied. Can we solve the problem? Uhmpp….

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Honestants and Swindlecants #7 (Solution)

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Based on the situation mentioned, we know that the gringo asked a man whether rumor about a fantastic buried treasure is true or false. Then the man replied, “On this island is a treasure, only if I am an honest man.” So shall he go and find the treasure?

“On this island is a treasure, only if I am an honest man,”

in other words,

“On this island is not a treasure, only if I am a Swindlecant”.

Let’s draw the possibilities:

There are 4 possibilities:

• If the man is honest, then the statement must be true, and the treasure is on the island.
• If the man is lying, then the statement must be false, and the treasure can be on the island.
• If the man is honest, then the statement must be true, the treasure is must be on the island.
• If the man is lying, and the treasure is not on the island, then the statement must be true. In this possibility, the fact is that the man telling truth (he’s honest).

So, whether the man is an Honestant or a Swindlecant, on that island must be a treasure. So, he’ll go finding the treasure.

 

P.S.: This brain teaser I copied from Brain Teasers (http://brainden.com/logic-problems.htm). Just on click on that link, then you’ll get more brain teasers to tease your brain or even just to ease your boring day. When you get stuck, you can visit brain teasers forum to get extra “clues” from them whom have tried to solve it (but for me, it’s better to do it by myself as I did in solving this quiz).

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Honestants and Swindlecants #6 (Solution)

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this pic was taken from http://www.istockphoto.com.

There were 2 persons the gringo met there: the bartender and the man sitting next to him. The gringo asked the bartender if he spoke the truth. The bartender answered, but the gringo didn’t hear it. When the gringo asked the man sitting next to him, the man said, “The bartender said yes, but he is a big liar.” Is the bartender an Honestant? And how about that man?

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Honestants and Swindlecants #5 (Solution)

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this pic was taken from http://www.istockphoto.com.

The man said, “If my wife is an Honestant, then I am Swindlecant." Seems like it’s a contrary couple.

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Honestants and Swindlecants #4 (Solution)

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this pic was taken from http://www.istockphoto.com.

There are 3 men, just call them J, K, and L. And we got 2 clues here.

J said, “We are all Swindlecants." (clue #1).

K said, “Just one of us is an honest man." (clue #2).

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Honestants and Swindlecants #3 (Solution)

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From the situation we know that:

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Honestants and Swindlecants #2 (Solution)

taken from: http://www.istockphoto.com/  

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Just like the 1^st Honestants and Swindlecants brain teaser, this is also a typical logic problem which can be solved by using classic logic operations.

Here, we (still) got 3 main clues:

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Honestants and Swindlecants #1 (Solution)

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This is a typical logic problem which can be solved by using classic logic operations.

The clue is in the 2-first sentence:

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