Welcome to BrainyRiddles!

Our goal is to challenge your wit and give a little brain teaser.

Here you will find some of the best riddles and puzzles on the Internet from simple logic questions and word tricks to in-depth math problems like probability and geometry.

Browse through our category sorted by difficulty (easy, medium and hard) to find your next challenge.

How many descendants?

Very few people bother to determine what an amazing potential for overpopulation they have. Let us consider yours. If you and your wife have a meager two children, it would seem you are not adding much to the world. But let's suppose that in 5 years each of your...

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How could this be?

A woman gave birth to two boys on the same date, within about twenty minutes of each other, and yet they were not twins. How could this be?She had triplets.more riddlesDonec rutrum congue leo eget malesuada. Vivamus magna...

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How many – how much?

The engineering department was arranging for a rather expensive catered lunch to bid farewell to their retiring colleague. They calculated that it would cost each person $30. One good mathematician remarked, "It's lucky that there aren't five fewer of us to split the...

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What are the people taking?

A steady stream of people enter Mike's place of business and remove its treasured belongings. The people do not pay for what they take. Mike allows them to take as much as they can carry as long as they keep their mouths shut. What are the people taking and which type...

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How many hours?

My husband and I can't seem to get our watches to work properly. His consistently runs one minute per hour fast, and mine runs two minutes per hour slow. This morning we nearly missed a wedding because our watches were an hour apart and we looked at the slower one....

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How old was the groom?

When the two met, one was half the other's age plus seven years. Ten years later, when they married, the bride was thirty, but this time one was nine-tenths the age of the other. How old was the groom? (No fractions, no partial years-whole numbers only)The...

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Is it possible?

Jim and Tom find a long piece of pipe in a vacant lot. It's big enough so that each boy can just manage to squeeze into it and crawl from one end to the other. If Jim and Tom go into the pipe from opposite ends, is it possible for each boy to crawl the entire length...

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Where’s the other dollar?

Three guys walk into town. They go into a hotel and ask for a room they can share. The clerk has just the thing they want for thirty dollars. The clerk sends them to the room, takes out the ledger, and realizes that he made a mistake. The room costs only twenty-five...

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At what time?

A plane flies from Athens to Brussels at maximum speed. Normally, flying at maximum speed would enable it to reach Brussels in four-fifths of the time that it takes to fly there at cruising speed. On this occasion, however, the velocity of a favorable wind enables it...

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