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Thought-provoking exercises
Posted: Fri Jan 15, 2010 9:26 am
by Jazzy
1. There is a man who lives on the top floor of a very tall building. Everyday he gets the elevator down to the ground floor to leave the building to go to work. Upon returning from work though, he can only travel half way up in the lift and has to walk the rest of the way unless it's raining! Why?
2. A man and his son are in a car accident. The father dies on the scene, but the child is rushed to the hospital. When he arrives the surgeon says, "I can't operate on this boy, he is my son!" How can this be?
3. A man is wearing black. Black shoes, socks, trousers, jumper, gloves and balaclava. He is walking down a black street with all the street lamps off. A black car is coming towards him with its light off but somehow manages to stop in time. How did the driver see the man?
4. One day Kerry celebrated her birthday. Two days later her older twin brother, Terry, celebrated his birthday. How?
5. Why is it better to have round manhole covers than square ones? This is logical rather than lateral, but it is a good puzzle that can be solved by lateral thinking techniques. It is supposedly used by a very well-known software company as an interview question for prospective employees.
6. A man went to a party and drank some of the punch. He then left early. Everyone else at the party who drank the punch subsequently died of poisoning. Why did the man not die?
Thought-provoking exercises
Posted: Fri Jan 15, 2010 9:34 am
by el guapo
3 its day time
Thought-provoking exercises
Posted: Fri Jan 15, 2010 9:39 am
by el guapo
4 kerry older twin brother was just that her bro who was a twin but not to her
Thought-provoking exercises
Posted: Fri Jan 15, 2010 9:42 am
by el guapo
6 he poisend the b4 he left
Thought-provoking exercises
Posted: Fri Jan 15, 2010 9:50 am
by mikeinie
1. Ok, I have been thinking about #1 and am taking a wild guess.
I say that he is short and cannot reach the top floor button, but when it is raining he has an umbrella and can reach it with the tip of the umbrella.
Probably wrong but a guess.
Thought-provoking exercises
Posted: Fri Jan 15, 2010 9:50 am
by CARLA
1. To short to reach the top button without an umbrella.
2. Doctor is his mother.
3. It's day time or he is wearing white ...
6. He poisoned the punch.
10. One eye.
17. He jumped into the building not OUT.
Thought-provoking exercises
Posted: Fri Jan 15, 2010 10:27 am
by Saint_
5. I think I know this one: Round covers use less material than square ones and are therefore cheaper.:-3
Thought-provoking exercises
Posted: Fri Jan 15, 2010 10:39 am
by ZAP
6. Was it not the punch that held the poison?
Thought-provoking exercises
Posted: Fri Jan 15, 2010 11:21 am
by Jazzy
Correct answers so far are #1, #2 and #3.
Remaining questions:
4. One day Kerry celebrated her birthday. Two days later her older twin brother, Terry, celebrated his birthday. How?
5. Why is it better to have round manhole covers than square ones? This is logical rather than lateral, but it is a good puzzle that can be solved by lateral thinking techniques. It is supposedly used by a very well-known software company as an interview question for prospective employees.
6. A man went to a party and drank some of the punch. He then left early. Everyone else at the party who drank the punch subsequently died of poisoning. Why did the man not die?
Thought-provoking exercises
Posted: Fri Jan 15, 2010 12:13 pm
by Saint_
6. They died of FOOD poisoning!!:D
Thought-provoking exercises
Posted: Fri Jan 15, 2010 12:15 pm
by ZAP
#4. Does the answer lie in the fact that they were in different time zones?
Thought-provoking exercises
Posted: Fri Jan 15, 2010 12:16 pm
by Saint_
4. Ummm... Square manholes would have to be hinged? No...
Ummm... Square, umm...
Damn.
Round manholes can be lifted from one point?
Thought-provoking exercises
Posted: Fri Jan 15, 2010 12:18 pm
by Jazzy
Saint_;1282506 wrote: 6. They died of FOOD poisoning!!:D
Wrong as they all drank the punch :wah:
Thought-provoking exercises
Posted: Fri Jan 15, 2010 12:21 pm
by Jazzy
Saint_;1282509 wrote: 4. Ummm... Square manholes would have to be hinged? No...
Ummm... Square, umm...
Damn.
Round manholes can be lifted from one point?
Ummmm....no :wah:
Thought-provoking exercises
Posted: Fri Jan 15, 2010 12:29 pm
by Jazzy
Zapata;1282508 wrote: #4. Does the answer lie in the fact that they were in different time zones?
Could be but there could also be another answer as well :p How did that mother get to a different time zone? :-3
Thought-provoking exercises
Posted: Fri Jan 15, 2010 1:41 pm
by Rapunzel
Manhole covers are round because square ones can actually fall down the hole if put down at an awkward angle. So they could get knocked out of place then fall down when walked on. Bye bye person. Round ones are safer.
Thought-provoking exercises
Posted: Fri Jan 15, 2010 1:44 pm
by Rapunzel
Was the punch poisoned after he drank it?
Did he puke it up before it had time to affect him?
Was he taking some medication that automatically made the poison invalid in some way?
Thought-provoking exercises
Posted: Fri Jan 15, 2010 1:46 pm
by Rapunzel
Was the poison in the ice? Did he drink it before the ice melted?
Was the poison a heavy element? Did it lay at the bottom of the punch bowl so only those who drank from the bottom died?
Thought-provoking exercises
Posted: Fri Jan 15, 2010 2:27 pm
by Jazzy
Rapunzel;1282531 wrote: Manhole covers are round because square ones can actually fall down the hole if put down at an awkward angle. So they could get knocked out of place then fall down when walked on. Bye bye person. Round ones are safer.
Correct answer! Very good Rap :-6
Thought-provoking exercises
Posted: Fri Jan 15, 2010 2:28 pm
by Jazzy
Rapunzel;1282534 wrote: Was the poison in the ice? Did he drink it before the ice melted?
Correct Answer! :-6
Thought-provoking exercises
Posted: Fri Jan 15, 2010 2:34 pm
by Jazzy
One unsolved and some new ones for you:
Unsolved:
4. One day Kerry celebrated her birthday. Two days later her older twin brother, Terry, celebrated his birthday. How?
New Questions:
1. A woman gave natural birth to two sons who were born on the same hour of the same day of the same month of the same year. But they were not twins and she had no access to a time machine. How could this be?
2. A man was driving alone in his car when he spun off the road at high speed. He crashed through a fence and bounced down a steep ravine before the car plunged into a fast flowing river. As the car slowly settled in the river, the man realized that his arm was broken and that he could not release his seat belt and get out of the car. The car sank to the bottom of the river. He was trapped in the car. Rescuers arrived two hours later, yet they found him still in the river, but alive. How come?
3. A police officer saw a truck driver clearly going the wrong way down a one-way street, but did not try to stop him. Why not?
4. A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child. Where's the father?
5. A man is found dead in an empty field with a pack strapped to his back. How did he die?
Thought-provoking exercises
Posted: Fri Jan 15, 2010 3:58 pm
by Bryn Mawr
4. Child a is born a 23:50 on 28/02. Child b is born at 00:10 on 01/03 and this is a leap year.
B1. She's the midwife
B2. Air bubble tr5apped in the car
B3. It's a fire engine answr a call in that street
B4. Not chosen yet
B5. His parachute didn't open
Thought-provoking exercises
Posted: Fri Jan 15, 2010 5:16 pm
by Kathy Ellen
4. Kerry and Terry are not twins. He has a twin.
Thought-provoking exercises
Posted: Sat Jan 16, 2010 6:00 am
by Jazzy
Bryn Mawr;1282571 wrote: 4. Child a is born a 23:50 on 28/02. Child b is born at 00:10 on 01/03 and this is a leap year. -Correct
B1. She's the midwife - Not correct
B2. Air bubble tr5apped in the car - Not Correct
B3. It's a fire engine answr a call in that street - Not Correct
B4. Not chosen yet - Not Correct
B5. His parachute didn't open - Correct
Please see results after each question above.
Thought-provoking exercises
Posted: Sat Jan 16, 2010 6:02 am
by Jazzy
Unanswered Questions:
1. A woman gave natural birth to two sons who were born on the same hour of the same day of the same month of the same year. But they were not twins and she had no access to a time machine. How could this be?
2. A man was driving alone in his car when he spun off the road at high speed. He crashed through a fence and bounced down a steep ravine before the car plunged into a fast flowing river. As the car slowly settled in the river, the man realized that his arm was broken and that he could not release his seat belt and get out of the car. The car sank to the bottom of the river. He was trapped in the car. Rescuers arrived two hours later, yet they found him still in the river, but alive. How come?
3. A police officer saw a truck driver clearly going the wrong way down a one-way street, but did not try to stop him. Why not?
4. A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child. Where's the father?
Thought-provoking exercises
Posted: Sat Jan 16, 2010 6:10 am
by Rapunzel
Jazzy;1282639 wrote: Unanswered Questions:
1. A woman gave natural birth to two sons who were born on the same hour of the same day of the same month of the same year. But they were not twins and she had no access to a time machine. How could this be?
2. A man was driving alone in his car when he spun off the road at high speed. He crashed through a fence and bounced down a steep ravine before the car plunged into a fast flowing river. As the car slowly settled in the river, the man realized that his arm was broken and that he could not release his seat belt and get out of the car. The car sank to the bottom of the river. He was trapped in the car. Rescuers arrived two hours later, yet they found him still in the river, but alive. How come?
3. A police officer saw a truck driver clearly going the wrong way down a one-way street, but did not try to stop him. Why not?
4. A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child. Where's the father?
1. There were more than 2 children born so not twins because they're triplets or quads or quins or sextuplets etc.
2. The river was either very low or had dried up and just the river bed remained.
3. It was a detour. All traffic had to go the wrong way down the one way street that day.
4. He's done a bunk, refused to pay child maintenance, knocked up 4 other women and now has a new girlfriend!
Thought-provoking exercises
Posted: Sat Jan 16, 2010 8:39 am
by Jazzy
Rapunzel;1282644 wrote: 1. There were more than 2 children born so not twins because they're triplets or quads or quins or sextuplets etc.
2. The river was either very low or had dried up and just the river bed remained.
3. It was a detour. All traffic had to go the wrong way down the one way street that day.
4. He's done a bunk, refused to pay child maintenance, knocked up 4 other women and now has a new girlfriend!
Good job Rap as #1 and #2 are correct :-6
Thought-provoking exercises
Posted: Sat Jan 16, 2010 8:41 am
by Jazzy
Unanswered questions:
3. A police officer saw a truck driver clearly going the wrong way down a one-way street, but did not try to stop him. Why not?
4. A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child. Where's the father?
Feel free to add your own questions in this thread

Thought-provoking exercises
Posted: Sat Jan 16, 2010 9:53 am
by Rapunzel
Jazzy;1282661 wrote: Good job Rap as #1 and #2 are correct :-6
What about no. 4? I liked my answer to no. 4. :wah:
Thought-provoking exercises
Posted: Sat Jan 16, 2010 10:07 am
by Jazzy
Rapunzel;1282683 wrote: What about no. 4? I liked my answer to no. 4. :wah:
I loved your answer to #4 :yh_rotfl
Thought-provoking exercises
Posted: Sat Jan 16, 2010 1:35 pm
by Bryn Mawr
Jazzy;1282662 wrote: Unanswered questions:
3. A police officer saw a truck driver clearly going the wrong way down a one-way street, but did not try to stop him. Why not?
4. A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child. Where's the father?
Feel free to add your own questions in this thread
3. The officer had just directed the driver to go that way
4. On top of her. (Or, of course she might have been on top :-p)
Thought-provoking exercises
Posted: Sun Jan 17, 2010 3:14 pm
by Jazzy
Bryn Mawr;1282733 wrote: 3. The officer had just directed the driver to go that way
4. On top of her. (Or, of course she might have been on top :-p)
Sorry, both answers are incorrect

Thought-provoking exercises
Posted: Sun Jan 17, 2010 3:15 pm
by Jazzy
Unanswered Questions:
3. A police officer saw a truck driver clearly going the wrong way down a one-way street, but did not try to stop him. Why not?
4. A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child. Where's the father?
Thought-provoking exercises
Posted: Sun Jan 17, 2010 3:19 pm
by Betty Boop
Jazzy;1282958 wrote: Unanswered Questions:
3. A police officer saw a truck driver clearly going the wrong way down a one-way street, but did not try to stop him. Why not?
4. A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child. Where's the father?
3.The truck was only going one way... ah the truck driver was walking??
Thought-provoking exercises
Posted: Sun Jan 17, 2010 3:23 pm
by Bryn Mawr
Jazzy;1282957 wrote: Sorry, both answers are incorrect
Well the child's age certainly calculates out to minus nine months at the point when you're asking where the father is so I felt it was a reasonable answer :wah: