Brainteaser Puzzles | Mind Teaser | Math Logic

Other interesting Brainteaser

Oct 9, 2007

The murder (Logic Brainteaser Puzzle)

This is the hardest question so far, please try to solve it!!

One evening there was a murder in the home of married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?

Clue:

Establish what we know about the youngest person first. This person cannot have been either the victim three, the helper four or the killer five. Then work out who was oldest, youngest, etc. After this draw up the various possibilities about who could have been what.

Answer:

We know from (3) that the youngest person was not the victim, from (4) that the youngest person was not the helper and from (6) that the youngest person was not the killer. The youngest person can only have been the witness therefore. If we make up a chart there are now three possible combinations:

Oldest person (father) H H M

Next to oldest (mother) V M H

Next to youngest (son) M V V

Youngest (daughter) W W W

(H = Helper ; V = Victim ; M = Murderer ; W = Witness)

We can work out from (5) that the father was the oldest, from (2) that the youngest person must have been the daughter. Therefore the next to the youngest must have been the son and the next to the oldest, the mother.

Of three possibilities: the first is impossible (from (3) – the youngest person and the victim were of different sexes); the third is also impossible (from (1) – the witness and the helper were of different sexes). Therefore only the second possibility holds – and the mother was the murderess.


27 comments:

Anonymous said...

oldest person father is the murderer.

Andri said...

Nop, that is wrong..
The oldest person is the father, thats right.

Andri said...

It seems the some of the member in the Yahoo Groups have managed to answer this.

Anonymous said...

the mother is the killer, the father is the accomplice, the son was murdered and the daughter was the witness.

Anonymous said...

yay i got it right!!!

Anonymous said...

thats amazin n i got it right - i loved it!

Anonymous said...

Just want to say what a great blog you got here!
I've been around for quite a lot of time, but finally decided to show my appreciation of your work!

Thumbs up, and keep it going!

Cheers
Christian, iwspo.net

Anonymous said...

Dad helped murderer
Son was murdered
Daughter was witness
Mother was murderer

Anonymous said...

Strona webowa posiada darmowe ilustracje i filmiki z branzy [url=http://www.szmule.pl]sex anonse[/url]. Galerie erotyczne przeznaczone tylko dla widzow doroslych. Codzienna aktualizacja tresci. Zobacz koniecznie!

Anonymous said...

Artistically, I greeting you all again. After my extended companionship in the forum is not, I could not learn the shibboleth to your time-honoured sketch and started a changed one. I'm pleased as punch that I am again with you.

Anonymous said...

Drop in on us contemporary to buy more information and facts in the matter of Come to see us now to come by more facts and facts anyway [url=http://www.polandlimoservice.com]przewóz osób warszawa[/url]

kassu said...
This comment has been removed by the author.
Anonymous said...

its really easy!.. you just have to fill in the blanks.. start out by finding out who's the oldest!.. if the father is the oldest... and daughter is the youngest (common sense that the daughter is the oldest, if you read the question)..then the mother is the 2nd oldest and the son is older then the daughter... thats the most important part.. then its easy, just read the numbers again... this is how i did it..

murderer(female) Mother
helper (male) father

victim (male) son
witness (female) daugh


oldest = Father (m)
older = mother (f)
old = son (m)
young = daugh (f) (not the murderer)

Anonymous said...

I want to share with you a math riddle app that i found:
https://play.google.com/store/apps/details?id=carmon.apps.four4s.puzzle
The task is to create a given number
by up to 4 digits of 4.

Anonymous said...

Payday Loans Online No Credit Check http://www.2applyforcash.com entifyibe [url=http://www.2applyforcash.com/]payday loans online[/url] Orassantaxnom payday loans online payday loans There is no cost to apply, but it can take up to three weeks to process your application, and $50,000 personal income guarantee to those who distribute a certain number of the empower magazine each month is significant.It's a product promotion from market easy money like specific!!

Anonymous said...

Awesome! Its genuinely amazing paragraph,
I have got much clear idea regarding from this piece of writing.


Stop by my web blog ... bmi chart

Anonymous said...

My brother suggested I would possibly like this blog.
He used to be totally right. This submit truly made my day.

You can not imagine simply how so much time I had spent for this info!
Thanks!

my site; legal ecstasy

Anonymous said...

Тhis piece of writіng ωіll аѕsist the internet vіeωeгѕ for ѕettіng
up neω blog or еvеn а weblog from start to
end.

Alѕο visit mу web blog: premature ejaculation pills

Anonymous said...

great іssues altogether, you juѕt won a new
гeaԁer. What сοulԁ you recommend abоut your post that you
sіmplу mаde sоmе days in
the past? Any suгe?

Also visіt mу blοg post; generic viagra

Anonymous said...

Our simple models and lovely appears to be like works to make this process coffee brewer the best option
as part food preparation. Investigate. A bug secure whilst day shield usually are added in
for those lounge chair. Dehydrate until finallyl crunchy
probably compact softer if you prefer. These machines get the job done in their tremendous future accompanied by max
by using capability.

Feel free to visit my web site :: krup coffee maker troubleshooting

Anonymous said...

Triggered ways are very important in selecting a definite machine, think about mobile computer have no clue where do you start virtually all talking of any small load?
Already required to pick up significant minerals and vitamins off vegetables, my brand new juicer starting
to become rough advantageous home appliance to nearby.
This Jack port Lalane Electrical energy Machine extremely good.

Definitely come to a decision a new delicious numerous through out
one particular take out.

Also visit my blog post; wolfgang puck Commercial blender reviews

Anonymous said...

I would request why is it that the chinese do better than us in almost all aspects of
schooling accept english than we do? i imply they are doing
teach in direction of precisely the same objective goals in regards to data and facts but why is it they just do better?
i might say its due to the fact the american? school system is particularly designed to
flip out silly little ones, period. When you get the likelihood, read "the deliberate dumbing down of america" which explains the reasons behind this phenomnon and why its happening.


my page :: 60 Minute stamina secrets torrent

Anonymous said...

Most of automatics should try to adhere to a clear the cleaning functioning, in the powerplant could faulty.
My favorite best products are the exact Cuisinart mixers, with solved the problem an excellent deal right
after chef's. Work well on childrens parties and also kitchen photo full night's.


Also visit my page :: professional blenders reviews

Anonymous said...

I'm not confident that Robertson has admitted any such thing. He also wrote of Havel:"But he was also concerned that his demands for the truth, to lift the Stalinist miasma that experienced wearily settled over Czechoslovakia, might eventually challenge the democratic socialism in which he believed"It just sounds like more in the leftist liberal progressive refrain that the failures of socialism are only cos it wasn't done appropriate.
That nasty Stalin merely spoiled a noble plan...And
notice the self-laudatory peons for the "rainbow coalition"
of leftists such Robertson himself, Harold Pinter and self-described timid-libertarian' Stoppard.

Feel free to visit my blog post good workout routines for weight loss

Anonymous said...

Near the $99.89, trucking jobs Working out also dishes fresh.
Preserve in mind Paul Osius while using the Hamilton
Coast Venture? Find, it's also possible to transmission flicks in between the desktop while Sony psp comfortably. Due to the milk 's flung online, it mixes with all the atmosphere and as a result
oxidises (revolves brown lightly) hastily.

Feel free to surf to my web page ... best blenders

Anonymous said...

Hi! Thiѕ іѕ kіnԁ οf off tоpic but I
neeԁ some advice fгom an еѕtablished blog.
Iѕ it vеry difficult tо ѕеt
up уour oωn blοg? I'm not very techincal but I can figure things out pretty quick. I'm thinking about
crеating my own but Ι'm not sure where to start. Do you have any tips or suggestions? With thanks

Also visit my web site ... cheap party pills

Anonymous said...

Fantastіc bеat ! I would liκe tο apprentice ωhіle you amend yοur
wеb ѕite, hοw саn i subsсribe fοг
a blog site? The account helρed mе a acсеptablе dеal.
I hаԁ bееn tiny bit асquainted of this your bгoadсast οffeгеd bright
сlear conceρt

Viѕit mу blog post; herbal highs usa

BrainBashers