Saturday, November 7, 2015

Solution to: Daring Thoughtless Thief Puzzle

A daring, rather thoughtless thief once stole a car of the police chief. The police immediately started an investigation and on the basis of witness depositions, four suspects were arrested that were seen near the car at the time of the crime. Because the chief of police took the case very seriously, he decided to examine the four suspects personally using a lie detector. Each suspect gave three statements during the examinations, as follows:
Suspect A:1. In high-school I was in the same class as suspect C.2. Suspect B has no driving license.3. The thief didn't know that it was the car of the chief of police.
Suspect B:1. Suspect C is the guilty one.2. Suspect A is not guilty.3. I never sat behind the wheel of a car.
Suspect C:1. I never met suspect A until today.2. Suspect B is innocent.3. Suspect D is the guilty one.
Suspect D:1. Suspect C is innocent.2. I didn't do it.3. Suspect A is the guilty one.
With so many contradicting statements, the chief of police lost track. To make things worse, it appeared that the lie-detector didn't quite work yet as it should, because the machine only reported that exactly four of the twelve statements were true, but not which ones.Now the big Question : Who is the thief??


Solution:
There are five statements in which nothing is said about the possible offender: A1, A2, A3, B3, and C1. The statements A1 and C1 seem to be completely contradictory, but that is not the case! Although at most one of these statements can be true, they can also be both false!For example, suspects A and C might only know each other from primary school. About the statements A2 and B3 not much can be said (although it seems unlikely that statement A2 would be false and at the same time statement B3 would be true). In addition, it follows from the introduction that statement A3 is true.On the basis of an assumption about which suspect is the offender, we can count how many of the remaining statements are true:
Statement:
A is the offender:
B is the offender:
C is the offender:
D is the offender:
None of the suspects is the offender:
B1
false
false
true
false
false
B2
false
true
true
true
true
C2
true
false
true
true
true
C3
false
false
false
true
false
D1
true
true
false
true
true
D2
true
true
true
false
true
D3
true
false
false
false
false
Total:
4 true, 3 false
3 true, 4 false
4 true, 3 false
4 true, 3 false
4 true, 3 false

Combined with the fact that statement A3 is true, this gives:

A is the offender:
B is the offender:
C is the offender:
D is the offender:
None of the suspects is the offender:
Total:
5 true, 3 false
4 true, 4 false
5 true, 3 false
5 true, 3 false
5 true, 3 false

Because it was given that exactly four statements were true, the statements A1, A2, B3, and C1 must be false, and suspect B must be the offender.

Wednesday, November 4, 2015

Paradox Puzzle


"You cannot prove this sentence is true."

Now, the question is - is that sentence true or false?

.
.
.
.
.
The answer is that this is something of a trick question brainteaser, or a paradox. This can be seen by following through the logic that the sentence is either true or false, and seeing what happens in each case.
If you can prove the sentence is true, then the sentence is false. If you can prove the sentence is false, then it is true. In this way a paradox is created.

What is the solution to the puzzle? Well, there is no direct answer to that as it is a paradox and is self-referential in a way that seems to admit of no true or false answer. One way out is to say that the sentence appears meaningless or has no definite meaning, and get out of the problem by admitting of a potential third possible logical state to a question rather than simply having to have a true or false answer.

Friday, February 10, 2012

Golden Chain Puzzle


The son of a rich bullion merchant left home on the death of his father. All he had with him was a gold chain that consisted of 148 links.
He rented a place in the city center with a shop at the lower level and an apartment at the upper level. He was required to pay every week one link of the gold chain as rent for the place. The landlady told him that she wanted one link of the gold chain at the end of one week, two gold links at the end of two weeks, three gold links at the end of three weeks and so on.
The son realized that he had to cut the links of the gold chain to pay the weekly rent.
 Also consider that when any chain is broken to get links, three links are obtained, two partitions and one link from which chain was broken.

If the son wished to rent the place for 148 weeks, what would be the minimum number of links he would need to cut?

Saturday, August 21, 2010

The Adam and the God Guess me puzzle

Adam, God made out of dust
But thought it best to make me first,
So I was made before man
To answer God's most Holy plan.

A living being I became
And Adam gave to me my name.
I from his presence then withdrew
And more of Adam never knew.

I did my Maker's law obey
Nor ever went from it astray.
Thousands of miles I go in fear
But seldom on earth appear.

For purpose wise God did see,
He put a living soul in me.
A soul from me God did claim
And took from me the soul again.

So when from me the soul had fled
I was the same as when first made.
And without hands, or feet, or soul,
I travel on from pole to pole.

I labor hard by day, by night
To fallen man I give great light.
Thousands of people, young and old
Will by my death great light behold.

No right or wrong can I conceive
The scripture I cannot believe.
Although my name therein is found
They are to me an empty sound.

No feat of death doth trouble me
Real happiness I'll never see.
To Heaven I shall never go
Or to Hell below.

Now when these lines you slowly read,
Go search your Bible with all speed
For that my name is written there
I do honestly to you declare.

What Am I?
---

Monday, August 9, 2010

Match and Lemon-aid Puzzle

Match and Lemon-aid Puzzle

A man in a restaurant asked a waiter for a juice glass, a dinner plate, water, a match, and a lemon wedge. The man poured enough water onto the plate to cover it.
"If you can get the water on the plate into this glass without touching or moving this plate, I will give you $100," the man said. "You can use the match and lemon to do this."
A few minutes later, the waiter walked away with $100 in his pocket. How did the waiter get the water into the glass?
---

Saturday, July 31, 2010

License to Kill Puzzle

License to Kill Riddle

Inspector Ixolite of the Yard was investigating a murder at Nottonmye Manor. It was a difficult case, and Ixolite was completely stumped until he noticed a message sent to him by the killer cunningly hidden in a newspaper advertisement selling Car Licence Plates.
Inspector Ixolite thought about it for a while, and when he had solved the puzzle, immediately arrested the guilty man.

Now answer these :
Q1) How did Ixolite know the advert was a clue for him?
Q2) Solve the code and tell me who Ixolite arrested.

Following is the newspaper advert (Car license plates for sale) that Inspector Ixolite saw.

Plates For Sale
[W 05 NWO]
[H 13 HSR ]
[O 05 EBM]
[D 08 UNE]
[U 10 HTY]
[N 04 BRE]
[N 16 TTE]
[I 26 LHC ]
[T 10 AEE]
[I 26 CNA]
[X 22 VDA]

---

Sunday, July 11, 2010

The truth of life... 10 advices from Bill Gates to the world

The truth of life... 10 advices from Bill Gates to the world

1. “Life is not fair - get used to it.”
-> The world is never fair. You know this? You can never change the whole world. Injustice still exists in the current society, so you should try to adapt.

2. “The world won't care about your self-esteem. The world will expect you to accomplish something BEFORE you feel good about yourself.”
-> Your extreme self-esteem may make your job inconvenient. Don't attach too much significance on your self-esteem as people care about your achievements rather than it.

3. “You will NOT make 40 thousand dollars a year right out of high school. You won't be a vice president with car phone, until you earn both.”
-> Normally you can't be rich if you have just finished high school. However to become an executive, you need to obtain both: a high school certificate and the money.

4. “If you think your teacher is tough, wait till you get a boss. He doesn't have tenure.”
-> Don’t complain that your boss is tough. When you are at school, your teachers always stand by you whenever you meet problems. However if you have thought that all your problems really come from the hard requirements of your teachers, you shouldn't look for a job. Simply if there aren't strict demands from your company, you will do nothing and quickly become unemployed. Then nobody will give you a hand.

5. “If you mess up, it's not your parents' fault, so don't whine about your mistakes, learn from them.”
-> Don't blame your failure on your destiny. All you need now is to stay calm and start from scratch.

6. “Before you were born, your parents weren't as boring as they are now. They got that way from paying your bills, cleaning your clothes and listening to you talk about how cool you are. So before you save the rain forest from the parasites of your parent's generation, try delousing the closet in your own room.”
-> You should show your gratefulness to your parents for spending most of their lives for your living and growth. All the “outdated” of your parents today is the price they have to pay for your growth.

7. “Your school may have done away with winners and losers, but life may not. In some schools they have abolished failing grades and they'll give you as many times as you want to get the right answer. This doesn't bear the slightest resemblance to ANYTHING in real life.”
-> Keep in mind that you can always become a leader, so that you will have more motivation to strive for your career.

8. “Life is not divided into semesters. You don't get summers off and very few employers are interested in helping you find yourself. Do that on your own time.”
-> Don’t always wait for holidays or you will be left behind your colleagues. That backwardness means elimination and unemployment.

9. “Television is NOT real life. In real life people actually have to leave the coffee shop and go to jobs.”
-> Everybody likes watching TV, but you shouldn't watch it too much. As that actually isn't your life and your thinking will be influenced. You yourself have to determine your own life.

10. “Be nice to nerds. Chances are you'll end up working for one.”
-> You should be nice to everyone. Life has happenings you could never expect. Be open to your boss, don’t say bad things behind his back as it will bring you nowhere.

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