Make us think!

In the comments please post a riddle, logic puzzle or brain teaser. (Hint: google any of those key words for some ideas and reference the website you used.)  Make sure you’re not posting one that another student has already done.

For example:

“I traveled from Bradenton to Washington, DC. On the first day I traveled one quarter of the distance. On day two, I traveled one half of the remaining distance. On day three, I traveled three quarters of the remaining distance. Yesterday I traveled one third of the remaining distance. I now have 21 miles left to travel. How far is it from Bradenton to Washington, DC in total?”  (from: www.brainbashers.com)

Do NOT post the answer.  Have fun with it.

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67 Responses to Make us think!

  1. frizzibschorer says:

    Change each of the following words to a different word by replacing the letter indicated by TWO letters. The two new letters have be consecutive — that is, they have to come right after one another in the alphabet, such as the letters AB, or BC. For example, you can change CAR to DEAR by replacing the C with the letters DE.
    TILE (replace the I)
    TINT (replace the N)
    HAMPER (replace the P)
    COUPE (replace the P)
    CHOOSE (replace the H)
    COLD (replace the O)

  2. marcus242 says:

    Can you name four days which start with the letter “T”?

    (From – http://www.brainbashers.com)

  3. michaelx says:

    OK I have a ton of these but right now this is the eonly one I could think ok. It is kind of weak but ok.

    Mary’s father has 4 daughters. Their names are, nana, nene, nini and ………….??????

  4. clendl1 says:

    The Man in the Elevator

    A man lives on the tenth floor of a building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator – or if it was raining that day – he goes back to his floor directly. Otherwise, he goes to the seventh floor and walks up three flights of stairs to his apartment. How come?

    http://brainden.com/logic-puzzles.htm

  5. isaline says:

    1
    11
    21
    1211
    111221
    312211
    –>find the next line….( don’t need to do any adding substraction, or anything, just look and think)!! =))

  6. csmlakar09 says:

    “3 Lights”

    In the basement there are 3 light switches in the off position. Each switch controls 1 of 3 light bulbs on the floor above. You may move any of the switches, but you may only go up stairs one time. How can you determine which switch controls each light?

    answer at :
    http://www.riddles.com/brain-new-answer.php?riddleid=100010

  7. braddoliner says:

    What Am I?

    I have a tail, and I have a head, but i have no body. I am NOT a snake. What am I?

  8. eaoki says:

    This is simple but hard.

    Farmer Stone has 6 pigs, 4 chickens and 3 cows. Farmer Morton has 5 pigs, 3 chickens and 5 cows. How many of Farmer Stone’s animals can say they are the same animal as Farmer Morton’s?

    http://www.brainbashers.com/showpuzzles.asp?page=4

  9. walker123 says:

    During a recent music festival, four DJs entered the mixing contest. Each wore a number, either 1, 2, 3 or 4 and their decks were different colours. DJ Skinf Lint came first, and only one DJ wore the same number as the position he finished in. DJ Slam Dunk wore number 1. The DJ who wore number 2 had a red deck and DJ Jam Jar didn’t have a yellow deck. The DJ who came last had a blue deck. DJ Park’n Ride beat DJ Slam Dunk. The DJ who wore number 1 had a green deck and the DJ who came second wore number 3. Can you determine who came where, which number they wore and the colour of their deck?

    http://www.brainbashers.com/showpuzzles.asp?puzzle=ZNQL

  10. cynarodriguez says:

    Once upon a time, and old lady went to sell her vast quantity of eggs at the local market.

    When asked how many she had, she replied:

    Son, I can’t count past 100 but I know that.

    If you divide the number of eggs by 2 there will be one egg left.
    If you divide the number of eggs by 3 there will be one egg left.
    If you divide the number of eggs by 4 there will be one egg left.
    If you divide the number of eggs by 5 there will be one egg left.
    If you divide the number of eggs by 6 there will be one egg left.
    If you divide the number of eggs by 7 there will be one egg left.
    If you divide the number of eggs by 8 there will be one egg left.
    If you divide the number of eggs by 9 there will be one egg left.
    If you divide the number of eggs by 10 there will be one egg left.

    Finally. If you divide the Number of eggs by 11 there will be NO EGGS left!

    How many eggs did the old lady have?

    http://www.brainbashers.com/showpuzzles.asp?page=1&formpost=Y&d3=Y

  11. miapiccio says:

    Matthew Shelborn frequently has to travel for his company, which gives him a chance to meet many people from all parts of the USA. In April, Matthew flew to five different US cities on business and he flew a different airline each time. During each trip he chatted with the person next to him, and no two people he talked to were in the same profession.

    From the information, can you determine the date Matthew made each flight (each was on a Monday exactly one week apart starting on April 2nd), the airline he flew, his destination, and the profession of the person who sat next to him on each flight?

    1. Three consecutive flights were, in order from first to last, the flight Matthew took with WTA Airways, the flight where he sat next to the teacher, and the flight he took to Atlanta.

    2. Matthew sat beside the sports coach on a flight some time earlier in the month than the one he took to Seattle.

    3. The week he flew Air Express was some time earlier in the month than the trip to Boston, which was some time earlier in the month than the trip where he sat next to the ballet dancer.

    4. It wasn’t on the trip to San Diego where Matthew sat next to the doctor.

    5. Matthew didn’t fly Skyways on his trip to Seattle, and he didn’t fly WTA Airways on the trip where he sat next to the sports coach.

    6. Atlanta was not Matthew’s destination on the trip where he made the acquaintance of the ballet dancer.

    7. The Fly America flight was exactly two weeks before the flight where Matthew passed the time chatting with the attorney.

    http://www.brainbashers.com/showpuzzles.asp?page=1&formpost=Y&d3=Y

  12. abdulsihag says:

    This is a pretty easy one if you think right.

    What is bigger than a grey elephant yet weighs nothing?

    http://www.riddles.com/

  13. andrewg23 says:

    During a recent Cluedo weekend, four games were played. In one game Miss Scarlet used the spanner, but not in the library. In another game the rope was used in the study, but not by Colonel Mustard. During one game the gun was used in the conservatory, whilst in another game Professor Plum was not to be found in the library. Colonel Mustard was never in the conservatory and Mrs White never used the rope. The lead piping may or may not have been used in the kitchen. Can you determine who used what and where?

    http://www.brainbashers.com/showpuzzles.asp?puzzle=ZNAF

  14. acalabrese says:

    This one is really good, a quick hint; think of words that mean numbers!

    A word I know, six letters it contains, subtract one, and twelve remains. What am I?

    http://www.riddles.com/question-new.php?riddleid=1321

  15. christinae says:

    The Boxes

    There are three boxes. One is labeled “APPLES” another is labeled “ORANGES”. The last one is labeled “APPLES AND ORANGES”. You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

    How can you label the boxes correctly?

    http://www.folj.com/puzzles/

  16. nickmace says:

    I am looking at somebody’s photo. Who is it I am looking at, if I don’t have any brothers or sisters and the father of that man on the photo is the son of my father?

  17. maxmusician says:

    12 BALLS

    There are 12 looking-similar balls. One ball has a different weight from all the others. Also, you have a two-pan balance for comparing weighs. Using the balance as least as you can, try to determing which ball has a unique weight. Also, determing whether it is heavier or lighter.

    http://www.ocf.berkeley.edu/~wwu/riddles/hard.shtml#12balls

  18. jjthornhill says:

    Seven Cats Seven Sacks

    As I was going to a Halloween Party
    I met a man with seven wives
    Every wife had seven sacks
    Every sack had seven cats
    Every cat had seven kits
    We traded bits
    Each cat, sack, wife, and he
    Took a kit. The rest for me.
    So now I have a kit supply.
    How many kits did I just buy?

    http://www.riddles.com/top100-new.php?riddleid=996

  19. melh716 says:

    How many common five letter words can you make from the following letters, using all the letters in each word?

    AELST

    http://www.brainbashers.com/

  20. trubino says:

    What is bigger than a grey elephant yet weighs nothing?

  21. jnguonly says:

    this ones impossible:

    The following puzzle is about two actual historical people.

    George and Evelyn never met but they carried on writing until late in life. It has been said that Evelyn loved George, but she was too old for him. George married in 1880. He converted to Catholicism in 1930. During World War II, he served with the Royal Marines. Partly in recognition of this, Evelyn’s subsequent writings analyzed the character of that war.

    Evelyn died in 1966 in Somerset. Her first full-length novel had been published in 1859. She is buried in Highgate Cemetery. He died at age 62, after having published his autobiography in 1964. He lived one year longer than she did.

    How could these statements all be true?

    http://www.johnpratt.com/items/puzzles/logic_puzzles.html

  22. sadie011 says:

    Don’t cheat! Because if you did, the test would be no fun.I promise, there are no tricks to the test.
    Read the sentence below and count the F’s in that sentence.Count them ONLY ONCE. Do not go back and count them again.
    See solutions for your score.

    FINISHED FILES ARE THE RE-
    SULT OF YEARS OF SCIENTIF-
    IC STUDY COMBINED WITH
    THE EXPERIENCE OF YEARS.

  23. maxxx13 says:

    A Cretan sails to Greece and says to Greek men who stands upon the shore: “All Cretans are liars.” Did he speak the truth or did he lie?
    A week later, the Cretan sailed to Greece again and said: “All Cretans are liars and all I say is the truth.” Although the Greeks ashore weren’t aware of what he said the first time, they were truly puzzled.
    If someone says about himself that he always lies, is this the truth or a lie?

  24. dirkr says:

    There has been much arguement about this riddle and it is a very old and popular one.

    What came first? The Chicken or the Egg?

  25. kanhai330 says:

    A man gets a phone call from his friend, and the friend says lets go for dinner. So the man gets ready, he changes, shuts the lights and lock his door. He then goes out for dinner for two hours. When he comes back, hes has killed 6 people. How did he kill 6 people.

  26. claytormey says:

    You are running in a street marathon and you overtake the person in second place, what position are you now in?

    http://www.brainbashers.com/showpuzzles.asp?puzzle=ZKJA

  27. Give me food, and I will live; give me water, and I will die. What am I?

    Fire

  28. tylercurrence says:

    The investigator asked Jaclyn about her children. Jaclyn said “I have 3 daughters, Alice, Betty, and Cindy. The product of their ages is 36. The sum of their ages is the same as the street number of our next door neighbor.”

    The investigator went next door and came back and said: “Still not enough information”. Jaclyn said: “Oh, I forgot to tell you that my oldest daughter is now in school”.

    The investigator found out the ages of her daughters immediately. Do you know their ages?

    http://www.freepuzzles.com/puzzles/PuzzlePage.asp?PuzzleNumber=Logic013&CategoryID=2

  29. Leo Gomez says:

    Two fathers and two sons went fishing. Each caught exactly one fish and yet there were only three fish caught. Why?

    http://www.johnpratt.com/items/puzzles/logic_puzzles.html

  30. jackdaru33 says:

    Is there any word that rhymes with orange or silver?

  31. jackdaru33 says:

    I did not use a website from my puzzle.

  32. josh07 says:

    Can you find a five letter word that can suffix (go after) each of these letters:

    re inte apo rein under pro

    (from-http://www.brainbashers.com)

  33. eduardochavez123 says:

    Four women, Louise, Lise, Carole and Lily are seated at a table.

    They are chatting about their holidays.

    They went to California, Texas, Florida and Arizona riding a lion, tiger, zebra and a pony.

    Hints : 1- The woman riding the zebra did not smoke.
    2- Carole declared that she loved Miami.
    3- The woman riding the tiger had a cigarette with Lily.
    4- Louise said :” Buy your pony a new saddle, Carole. I saw some during ourtrip to California?”
    5- The woman riding the tiger mentioned that she had seen the Alamo in Texas.
    6- Lise was a chain-smoker.

    Question : What are the destination and method of transportation for each woman ?

    http://www.pedagonet.com/brain/brain1.html

  34. mastronardi says:

    There was once a girl who was always jealous of her sister. One day a genie appeared and told her that he was “half magic” which meant that he could grant her wishes, but her sister would always get two times more than she did. She had three wishes. First, she wishes that she was the richest person in the world, but her sister soon became the richest because she got two times the money. Her second wish was that she was the most beautiful woman in the world, but her sister gets twice as much beauty. What was her third wish? http://www.riddles.com/

  35. philiplea says:

    Riddle me this. Until I am measured, I am not known. Yet how you miss me, When I have flown.

  36. jmorse09 says:

    ok lets say that you are the bus driver. the bus takes a left and goes a block and picks up 23 women and 6 men. the bus goes 3 miles and stops to let off 14 women and pick up 7 more men. then the bus drives for 1 1/2 hours and picks up 5 children with there 5 moms and 13 men get off. then the bus drives 6 more miles in 3 hours and makes an unschedualed stop dropping off all of the men and women, and picks up 17 pregnant moms and 3 aimless fathers…… what color hair does the bus driver have?

  37. mikulik says:

    What is heavier? 10 kilos of iron or 10 kilos of feathers?

  38. tomtomtomtomtom says:

    The buyer doesnt want it, the seller doesnt need it and the user doesn’t see it.

    WHAT IS IT ??

    not from a website i dont think

  39. bmurray13 says:

    An electric train leaves the station heading north and turns right then left the two rights. If the wind is coming from the West which way will the smoke from the train blow?

  40. sallywatson says:

    What Am I?

    I stay in one corner but travel the world.

    My sister told me this when I was like 8 years old.

  41. pabloserna says:

    this is a very cool one:

    think any number you want and then do this

    the number you are thinking +10+5+8+7-15+2+3-10-8 and then substract the number you were thinking and the answer is….

    2!!

    there is not webpage I created it

  42. lexare24 says:

    A criminal was about to be sentenced by a judge. The Judge told him “you can make one statement before I sentence you. If it is true, I’ll sentence you to four years in prison. If it is false, I’ll sentence you to six years in prison.” After the man made his statement, the judge decided to let him go free. What did the man say?

    My cousin told me this riddle.

  43. shaaz says:

    Where can you finish reading several books before you finish even one sentence?
    Source:http://www.braingle.com/brainteasers/index.php

  44. michael19913 says:

    Albert is a keen dog admirer and over the years has had a number of dogs. He has had an Alsatian, a Dalmatian, a Poodle and a Great Dane, but not necessarily in that order. Albert had Jamie first. The Dalmatian was an adored pet before the Great Dane. Sammy, the Alsatian, was the second dog Albert loved. Whitney was housed before the Poodle and Jimmy was not a Great Dane. Can you tell each of the dogs’ name and the order in which Albert had them?

    from: http://www.braingle.com

  45. anthonysasso says:

    Imagine you are in a room, no doors windows or anything, how do you get out?

  46. anthonysasso says:

    Imagine you are in a room, no doors windows or anything, how do you get out?

    http://www.riddles.com/top100-new.php?riddleid=995

  47. christinamiller123 says:

    This is one of my all time favorites! And I didn’t even have to use Google!

    There one was a man that was born before his father, killed his mother, and married his sister but did nothing illegal. How do you explain that?

    Hint: think about the word choice and different meanings of the words.

  48. samkoonce says:

    What occurs once in every minute, twice in every moment, yet never in a thousand years?

    http://brainden.com/logic-puzzles-3.htm

    the letter m

  49. ambry242 says:

    Slicing Pizzas

    Three friends bought a large pizza, but weren’t sure how to slice it. They decided to make one cut each across the pizza.

    What is the greatest number of pieces they could get with three cuts?

    http://www.eduplace.com/math/brain/34-028.html

  50. M^_-rc says:

    What driver doesn’t have a license?
    http://www.justriddlesandmore.com/Rid/1.html

  51. peturfreyr says:

    2 9 3 1 8 4 3 6 5 7

    What is the next term in this sequence ?

  52. cbirch1 says:

    if a rooster laid an egg on top of a triangle roof what way would the egg fall.

  53. dclose says:

    What is black and white and red all over?

  54. fateh1 says:

    There is a closed room with a light in it. Outside, there are 3 light switches. You can flick any of the switches any number of times. You can only open the door and go into the room once. You know that the light is initially off. How can you determine which light switch operates the light?

  55. blmartin says:

    What is represented by this BrainBat?

    TOOL
    O O
    O O
    LOOT

  56. stephenkimsey says:

    2 coins add up to be 30 centon of them is not a nickel. What are they?

  57. luis9050 says:

    No one can see me when I race through your house. Moving daily, it seems like I never stop. No one can catch me not even a cop. But being felt by my presents may calm your nerves?

    http://www.sarasota.k12.fl.us/bhs/bryan/bryan_riddle2.html

  58. aronj says:

    which one is lighter 5 pounds of gold ore 5 pounds of leaves ?

  59. rebeccagraff says:

    how can you measue 6 liters of water using only 4 and 9 litres bowls?

  60. charliecaris says:

    There is a butcher at the local butcher shop, he is five feet eleven inches tall, and he wears size 12 shoes and is very well built. He has a wife and 2 kids. What does he weigh?

    http://www.brainbashers.com/showpuzzles.asp?formpost=Y&field=ctop10a&page=1&puzzletext=All+Time+Top+10

  61. stephieritchey says:

    What part of a car travels the furthest?

  62. gmolinaro says:

    Why doesnt an elephant buy a computer???

  63. ethan104 says:

    in the beginning i have 4 legs, in the middle i have 2 legs, and in the end i have 3 legs, what am i?

  64. filippopoma says:

    It works in spanish maybe not in inglish

    Pepitos mother has three kids…… one is called bill and the other is called coin whats the third one called?

  65. felipegouvea says:

    One farmer bought a square piece of land, surrounded it with a fence, and signed with the naïve landlord a contract, under which the farmer had the right to perform several times the following operation: draw a straight line through any two points along the fence, take down the portion of the fence between those two point, and construct the same part of the fence symmetrically reflected in that line. Could the farmer increase the area of his land under this contract?

  66. joanap says:

    There was once a girl who was always jealous of her sister. One day a genie appeared and told her that he was “half magic” which meant that he could grant her wishes, but her sister would always get two times more than she did. She had three wishes. First, she wishes that she was the richest person in the world, but her sister soon became the richest because she got two times the money. Her second wish was that she was the most beautiful woman in the world, but her sister gets twice as much beauty. What was her third wish?

    http://www.riddles.com/

  67. thanks for all the contributions – this could keep us busy for a long time.

    COMMENTS ARE NOW CLOSED.

    check out Kanhai’s riddle – it’s about half way down the page (look for the purple photo with the profile). I have no idea on that one, and no way to find the answer ; (

Comments are closed.