All Puzzles

  • On Sunday evening Jacob walked into his study room. He wanted to put a piece of jewellery, which he took out of the safe an hour before, back into the safe. He noticed that the safe had been cracked open and he called the police immediately.
    When the police interrogated the staff on their activities during the hour in which the safe had been cracked, they gave the following alibis:

    @ the cook was preparing lunch;
    @ the gardener was pruning the hedge;
    @ the butler was fetching the mail;
    @ the maid was making the beds.

    After the police heard all the alibis, the culprit was caught immediately.

    Who was the culprit?

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    • 94 views
    • 3 answers
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  • If you had only one match and entered a cold and dark room, where there were a fireplace, an oil lamp and a candle, which would you light first ?

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    • 142 views
    • 1 answers
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  • A patient has fallen very ill and has been advised to take exactly one pill of medicine X and exactly one pill of medicine Y each day, lest he die from either illness or over dosage. These pills must be taken together. The patient has bottles of X pills and Y pills. He puts one of the X pills in his hand. Then while tilting the bottle of Y pills, two Y pills accidentally fall out. Now there are three pills in his hand. Because both types of pill look identical, he cannot tell which two pills are type Y and which is type X. Since the pills are extremely expensive, the patient does not wish to throw away the ones in his hand. How can he save the pills in his hand and still maintain a proper daily dosage?

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    • 171 views
    • 1 answers
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  • You walk into a room in which there are three primates: a chimpanzee, an orangutan, and a gorilla. The chimpanzee is holding a banana in each hand, the orangutan is holding a big stick, and the gorilla is holding nothing. Which primate in the room is the smartest?

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    • 152 views
    • 1 answers
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  • Vicky caught four animals in the Great Animal Forest and put them into four separate cages. The four animals are:

    the lion, that always tells the truth;
    the jackal, that always lies;
    the parrot, that always repeats the last given answer (if he is the first one, he randomly says “yes” or “no”);
    the giraffe, that is so slow that he always truthfully answers the previous question (if he is the first one, he also randomly says “yes” or “no”).
    The other animals want to free them and send the small, smart hedgehog on the way to size up the situation. In the middle of the night, the hedgehog creeps into the camp of the Vicky and tries to figure out which animal sits in which cage. One by one, he asks them “are you the jackal?” After hearing the four answers, the hedgehog only knows in which cage the giraffe sits. Then the hedgehog asks them in the same order “are you the giraffe?” After hearing the four answers, the hedgehog also knows in which cage the jackal sits. Because the hedgehog then still does not know in which cages all animals sit, he asks the first animal “are you the parrot?” The answer is “yes”, and now the hedgehog knows exactly which animal sits in which cage. The hedgehog returns to the other animals and together they free the captured animals.

    Which animal was in which cage?

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    • 134 views
    • 1 answers
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  • Jacob has three boxes with fruits in his barn: one box with apples, one box with pears, and one box with both apples and pears. The boxes have labels that describe the contents, but none of these labels is on the right box.

    How can Jacob determine what each of the boxes contains, by taking only one piece of fruit from one box?

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    • 162 views
    • 1 answers
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  • There are 20 coin machines, each of which produce the same kind of coin. you know how much a coin is supposed to weigh. One of the machines is defective, in that every coin it produces weighs 1 ounce less than it is supposed to. you also have an electronic weighing machine. how can you determine which of the 20 machines is defective with only one weighing? (by one use, means you put a bunch of stuff on the machine and read a number, and that’s it, you are not allowed to accumulate weight onto the machine and watch the numbers ascend, because that’s just like multiple weighing). you are allowed to crank out as many coins from each machine as you like.

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    • 163 views
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  • An Arab sheikh is old and must will his fortune to one of his two sons. He makes a proposition. His two sons will ride their camels in a race, and whichever camel crosses the finish line last will win the fortune for its owner. During the race, the two brothers wander aimlessly for days, neither willing to cross the finish line. In desperation, they ask a wise man for advice. He tells them something; then the brothers leap onto the camels and charge toward the finish line. What did the wise man say?

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    • 258 views
    • 1 answers
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  • Two fathers and two sons sat down to take tea. They had exactly three cup of tea, each person had a cup of tea. Explain how?

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    • 460 views
    • 3 answers
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  • Which word pronounced wrong is right but pronounced right is wrong.

    The answer is not ‘wrong’.

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    • 321 views
    • 1 answers
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