Logic Puzzles Questions

Q:

Logical puzzle

There are three boxes in a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies. The first box says 'The Gold is not here'. The Second box says 'The Gold is not here'. The Third box says 'The Gold is in the Second box'. Which box has the Gold?

Answer

As the message contains one truth, the third says that the gold is in the second box, if it is to be true, then the first box message will also become true. So Gold cannot be in second and third boxes. Gold is in the first box.

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Subject: Logic Puzzles

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Q:

Logical puzzle

You work at a fruit factory.
There are 3 crates in front of you. One crate contains only apples. One crate contains only oranges. The other crate contains both apples and oranges. And each crate is labeled. One reads "apples", one reads "oranges", and one reads "apples and oranges". But the labeling machine has gone crazy and is now labeling all boxes incorrectly. If you can only take out and look at just one of the pieces of fruit from just one of the crates, how can you label ALL of the crates correctly?

Answer

Our solution:


Take a piece of fruit from the "apples and oranges" crate. If it's an apple then you know that is the "apples" crate since ALL THE CRATES ARE LABELED INCORRECTLY. This means the crate marked "apples" must be "oranges" and the crate marked "oranges" must be "apples and oranges".

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Subject: Logic Puzzles

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Q:

Logical puzzle

Miss Anne has eleven kids in her class. She has a bowl containing eleven apples. Now Miss Anne want to divide the eleven apples to the kids, in such a way that a apple should remain in her bowl. How can Miss Anne do it?

Answer

Ten kids will get each one apple. The eleventh kid will get the apple with the bowl.

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Subject: Logic Puzzles

22 2028
Q:

Logical puzzle

Take from a pack of cards all the Aces, Kings, Queens and Jacks.
Arrange them in a 4 × 4 square so that every row, column and diagonal contains one card of each value (A,J,Q,K) and one card of each suit (Heart, Spade, Diamond, Club).

Answer

Our Solution:



Here is one solution of many:


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Subject: Logic Puzzles

10 1622
Q:

Logical puzzle

Four people are traveling to different places on different types of transport.
Their names are: Rachel, John, Mr. Jones and Cindy.
They either went on train, car, plane or ship.

* Mr. Jones hates flying
* Cindy has to rent her vehicle
* John gets seasick

Answer

Our Solution:    


  There are 3 possibilities


       Cindy: car
       Mr. Jones: train
       John: plane
       Rachel: ship


      Cindy: car
      Mr. Jones: ship
      John: plane
      Rachel: train


     Cindy: car
     Mr. Jones: ship
     John: train
     Rachel: plane

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Subject: Logic Puzzles

7 1400
Q:

Logical puzzle

There are only two barbers in town. One of them has a nice, neatly trimmed head of hair. The other one's hair is a complete mess.Which of the two barbers should you go to and why?

Answer

The one with messy hair, as they cut the neat barber's hair.

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Subject: Logic Puzzles

4 1350
Q:

Logical puzzle

At a restaurant, how could you choose one out of three desserts with equal probability with the help of a coin? What if the coin is biased and the bias is unknown?

Answer

Our solution:


Toss the coin twice.
Let TH, HT and TT correspond to the three choices.
And if you get HH, just repeat (so it takes 8/3 tosses on average).


BIASED COIN

If the coin was biased, TH and HT would occur with equal probability.
So you could assign THHT, HTTH and THTH to the three choices, with other 4-toss outcomes rejected.
Or you could assign HTT, THT and TTH to the three choices, with other 3-toss outcomes rejected.

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Subject: Logic Puzzles

8 1135
Q:

Logical puzzle

Dr.Will wants to operate for three different persons who were wounded. But he had only two surgical gloves. There is not any blood contact between the three persons. How can Dr.Will operate for the three people with two pair of surgical gloves?

Answer

First, Dr.Will wear both of the gloves, one above the other. He operate the first person. After finishing he remove the outer pair of gloves as inside out and place it in a tray. Then operate the second person. Now he will wear the first gloves as inside out above the second gloves. Operate the third person. At last he remove the gloves and dispose them.

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Subject: Logic Puzzles

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