Logic

1131 riddles

Riddles that derive from deduction and logical thinking.

There is a low railroad bridge in your town. One day you see a large truck stopped just before the underpass. When you ask what has happened, the driver tells you that his truck is one inch higher than the indicated height of the opening. This is the only road to his destination. What can he do to get through the underpass the easiest way?
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James ordered a fishing rod, priced at $3.56. Unfortunately, James 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 fishing rod was 4 feet and 1 inch, just a little too long, so how can the fishing rod be mailed to James without breaking the rules? Ideally James would like the fishing rod to arrive in one piece!
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On a fine sunny day a ship was in the harbor. All of a sudden the ship began to sink. There was no storm and nothing wrong with the ship yet it sank right in front of the spectator's eyes.

What caused the ship to sink?
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An old man wanted to leave all of his money to one of his three sons, but he didn't know which one he should give it to. He 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 father's fortune. What were the two things that the man bought?
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The following sentence is false. The preceding sentence is true. Are these sentences true or false?
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A man went on a trip with a fox, a goose and a sack of corn. He came upon a stream which he had to cross and found a tiny boat to use to cross the stream. He could only take himself and one other - the fox, the goose, or the corn - at a time. If he could not leave the fox alone with the goose or the goose alone with the corn. How does he get all safely over the stream?
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Jenna wrote all the numbers from 300 to 400 on a piece of paper. How many times did she write the digit 3?
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Mr. Grumper grumbles about bad time-keeping trains like everybody else. On one particular morning he was justified, though. The train left on time for the one hour journey and it arrived 5 minutes late. However, Mr. Grumper's watch showed it to be 3 minutes early, so he adjusted his watch by putting it forward 3 minutes. His watch kept time during the day, and on the return journey in the evening the train started on time, according to his watch, and arrived on time, according to the station clock. If the train traveled 25 percent faster on the return journey than it did on the morning journey, was the station clock fast or slow, and by how much?
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Finished files are the result of years of scientific study combined with the experience of years.

How many F's are in the previous sentence?
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Some cogs are tigs.
All tigs are bons.
Some bons are pabs.
Some pabs are tigs.

Therefore, cogs are definitely pabs. - True or False?
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