Videos Test Yourself Books MathFacts Math Diagnostics Math Tricks Daily PhysEd
Class Photos Worksheets Insectclopedia Musiclopedia Techlopedia Teacher Timesavers Study Guides
Recapitulation
Thanks Al Zymer


A barrel without a lid and some wine in it.
"This barrel of wine is more than half full."
"No it's not, it's less than half full."
Question : Without any measuring implements and without removing any wine from the barrel, how can you determine the correct answer?
Answer :
Tilt the barrel until the wine barely touches the lip of the barrel.
If the bottom of the barrel is visible then it is less than half full.
If the barrel bottom is still completely covered by the wine, then it is more than half full.


Janet ordered a Big Bertha extra long driver,.
Unfortunately, Janet is an Eskimo who lives in a very remote part of Greenland and the import rules there forbid any package longer than 4 feet to be imported.
The Big Bertha driver measures 4 feet and 1 inch, just a little too long,.
Question : How can the Big Bertha driver be mailed to Janet without breaking the rules?
Answer :
Insert the Big Bertha driver into a box which measures 4 feet on all sides.
The driver will fit within the diagonal of the box with room to spare.

Question : How can you clasp someone's hands together in such a manner that they cannot leave the room without unclasping them?
Answer :
Put their hands around a stationary object in the room, which will keep them from leaving the room unless they open their hands.


An old woman wanted to leave all of her money to one of her three sons.
She didn't know which one she should give it to.
She gave each of them a few coins and told them to buy something that would be able to fill their living room.
The first man bought straw, but there was not enough to fill the room.
The second bought some sticks, but they still did not fill the room.
The third man bought two things that filled the room, so he obtained his mother's fortune.
Question : What were the two things that the man bought?
Answer :
The wise son bought a candle and a box of matches.
After lighting the candle, the light filled the entire room.

Samatha and Steve where sitting in their family room one night.
While Samantha was watching T.V, her husband Steve was reading.
All of a sudden the power went out and Samantha decided to go to bed, but Steve kept on reading.
Question : With no use of artificial light, Steve kept on reading. How is this possible?
Answer :
Steve was blind... he was reading a book by Braille.

You are on an island in the middle of a lake.
The lake is in a remote part of the country and there has never been a bridge connecting the island to the mainland. Every day a tractor and wagon gives hay rides around the island.
Puzzled as to how the tractor had gotten onto the island, you ask around and find out that the tractor was not transported to the island by boat or by air, nor was it built on the island.
Question : How did the tractor got there?
Answer :
It was driven over in winter when the lake was frozen.


The following sentence is false. The preceding sentence is true.
Question : Are these sentences true or false?
Answer :
Neither, it's a paradox.
If the first is true, then the second must be false, which makes the first false… it doesn't work

Some cogs are tigs. All tigs are bons. Some bons are pabs. Some pabs are tigs.
Therefore, cogs are definitely pabs.
Question : Is this True or False?
Answer :
False, some cogs may be pabs, but not definitely all of them.


A woman went on a trip with a fox, a goose and a sack of corn.
She came upon a stream which she had to cross and found a tiny boat to use to cross the stream.
She could only take herself and one other - the fox, the goose, or the corn - at a time.
She could not leave the fox alone with the goose or the goose alone with the corn.
Question : How does she get all safely over the stream?
Answer :
Take the goose over first and come back.
Then take the fox over and bring the goose back.
Now take the corn over and come back alone to get the goose.
Take the goose over and the job is done!

A hiker comes to a fork in the road and doesn't know which way to go to reach his destination.
There are two women at the fork, one of whom always tells the truth while the other always lies.
The hiker doesn't know which is which, though.
He may ask one of the women, only one question to find his way.
Question : Which woman does he ask, and what is the question?
Answer :
Either woman should be asked the following question:
 "If I were to ask you if this is the way I should go, would you say yes?"
While asking the question, the hiker should be pointing at either of the directions going from the fork.

Two grandmothers, with their two granddaughters; two husbands, with their two wives;
two fathers, with their two daughters; two mothers, with their two sons;
two maidens, with their two mothers; two sisters, with their two brothers.
Only six in all lie buried here; All were born legitimately.
Question : How is this possible?
Answer :
Two widows each had a son.
Each widow married the son of the other and then each had a daughter.

You decide to send in the mail a valuable object to a friend.
You have a box which is big enough to hold the object.
The box has a locking ring which is large enough to have a lock attached and you have several locks with keys. However, your friend does not have the key to any lock that you have.
You cannot send the key in an unlocked box since it may be stolen or copied.
Question : How do you send the valuable object, locked, to your friend - so it may be opened by your friend?
Answer :
Send the box with a lock attached and locked.
Your friend attaches his or her own lock and sends the box back to you.
You remove your lock and send it back to your friend.
Your friend may then remove the lock she or he put on and open the box.

You are standing in front of a room with one light bulb inside of it.
You cannot see if it is on or off. Outside the room there are 3 switches in the off positions.
You may turn the switches any way you want to.
You stop turning the switches, enter the room and know which switch controls the light bulb.
Question : How is this done?
Answer :
You turn 2 switches "on" and leave 1 switch "off" and wait about a minute.
Then enter the room, but just before you enter, turn one switch from "on" to "off".
Once in the room, feel the light bulb - if it is warm, but off, it has to be the last switch you turned off.
If it is on, it has to be the switch left on.
If it is cold and is off, it has to be the switch you left in the off position.


Question : Why can’t you take a photo of a Canadian woman using hair curlers?
Answer :
You can't take a picture with hair curlers you need a camera!

Because cigars cannot be entirely smoked, a hobo who collects cigar butts can make a cigar to smoke out of every 5 butts that he finds. Today, he has collected 25 cigar butts.
Question : How many cigars will he be able to smoke?
Answer :
6, he makes 5 originals from the 25 butts he found, and after he smokes them he has 5 butts left for another cigar.

Two planes take off at the same exact moment.
They are flying across the Atlantic.
One leaves New York and is flying to Paris at 500 miles per hour.
The other leaves Paris and is flying to New York at just 450 miles per hour.
Question : Which one will be closer to Paris when they meet?
Answer :
They will both be the same distance from Paris when they meet!


Twenty people are in an empty, square room.
Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way other than the eyes.
Question : Where can you place an apple so that all but one person can see it?
Answer :
Place the apple on one person's head.

Question : What goes around the world, but stays in the corner?
Answer :  A stamp


Lady GawGaw has six pairs of black gloves and six pairs of brown gloves in her drawer.
Question : In complete darkness, how many gloves must she take from the drawer in order to be sure to get a pair that match? 
Answer :
13.
She could possibly take out 6 black left hand gloves and then 6 brown left hand gloves, the next one would have to be either the right hand or left hand match.


Mom, Dad, and 2 kids have come to a river, and they find a boat.
It is small and can only carry one adult or 2 kid at a time.
Both kids are good rowers.
Question :  How can the whole family reach the other side of the river?
Answer :
The children row across. One comes back.
An adult goes over, and the kid comes back.
Both kids row across again, and one comes back.
The other adult rows across and the kid comes back.
Both kids row across again.


Question : What is the largest possible number you can write using only 2 number - just 2 numbers, no other mathematical symbols?
Answer :
99, this is 9x9x9x9x9x9x9x9x9 or 387,420,489


Question : Why are 1898 silver dollars worth more than 1897 silver dollars?
Answer :
$1,898.00 is one more silver dollar than $1,897.00

Question : What English word can have 4 of its 5 letters removed and still retain its original pronunciation.
Answer :  queue

William's mother had three children.
The first child was named April. The second child was named May.
Question : What was the third child's name?
Answer :
William. He's the third child!

A woman goes into a hardware store to buy something for her house.
When asked the price, the clerk replies, "the price of one is twelve cents, the price of forty-four is twenty-four cents, and the price a hundred and forty-four is thirty-six cents.
Question : What does the woman want to buy?
Answer :
House Numbers.


On a shelf in the library, there is a 3 book set of almanacs labeled volume 1, volume 2 and volume 3.
Each book is 2 1/2 inches thick, the pages being 2 inches thick and each cover is 1/4 inch thick.
A bookworm starts eating its way from the 1st page of volume 1 and stops at the last page of volume 3.
Question : How far did the bookworm travel?
Answer :
3 inches.....you must visualize that when the books are on the shelf with the binders facing you that the right side of volume 1 is where page 1 is and the left side of volume 3 is the last page of volume 3.
This being the case, the worm only eats through the cover of volume 1 (1/4 inch), all of volume 2 (2 1/2 inches), and only the cover of volume 3 (1/4 inch) for a total of 3 inches.

An  friend of the family left $666,666 to 2 fathers and 2 sons to be split equally.
After careful consideration they each happily received $222,222.
Question : Why and how was this possible?
Answer :
Although it seems there are four people, there are only 3.
They encompass 3 generations...a grandfather, his son (who is also a father), and his son.
Thus there are 2 fathers and 2 sons, but only 3 people to split the money!


Question : If a snail crawls halfway around a circle then turns around and crawls halfway back, is it now back where it started
Answer :
No, it crawls halfway around the circle, but halfway back is only 1/4 of the return trip (half of a half).

Question : What day of the year has 25 hours in it?
Answer :
Daylight savings time when the clocks are turned backward one hour.
Of course, this only takes place where daylight savings time is observed.


You are attending a party with some friends when one of them states that there is something in the room that everyone can touch with either of their hands, but you can only touch it with your left hand.
Question : What is it?
Answer :
Your right elbow.


A woman was critically wounded during a vicious fight in 1958; she died and was buried in 1957.
Question : How is this possible?
Answer :
She was injured in 1958 B.C. and was buried in 1957 B.C.


Water lilies double in area every 24 hours.
In spring, there is one water lily on a lake. In sixty days the lake is completely covered with lilies.
Question : How many days did it take to cover half of the lake?
Answer :
Fifty nine days






Brain Teaser Of The Week