5 Clever Riddles: Can You Find the Answer?

clever riddlesRead these 5 clever riddles and try to solve them. They are not very difficult, so I believe you will easily find the answers!

Riddle 1. “Smart measure”

Someone has a flask of wine and wants to give 1 liter to his friend. How can he measure it without wasting any wine, if he has only a 5 liter container and a 3 liter one?

Riddle 2. “The Empty Room”

A hanged man was found in an empty room with very high ceiling. The room had high humidity and was locked from inside. The question is: how did he manage to hang himself since the room was completely empty, the ceiling was very tall and there was no window?

Riddle 3. “The Bridge”

There is an outpost in the middle of a bridge. The guardian comes out every ten minutes and asks everyone who is on the bridge to go back, otherwise he will shoot. You need fifteen minutes to pass the bridge. How can you do it?

Riddle 4. “Bottle return”

As part of a recycling program, the one who returns empty soda bottles can exchange them for full ones. Specifically, 4 empty bottles are exchanged for 1 full. If a person has collected 24 empty bottles, how many bottles of soda will he drink?

Riddle 5. “The lamp”

There is a room which has one lamp inside and three switches outside. One of these switches is the one that lights the lamp. You have only one attempt to find the right switch. Which switch or switches must be pressed so that when you open the door you will figure out which is the right one, given that when the door is closed you can’t see if the lamp lights or not?

P.S. I will publish the answers soon in another article or in the comments for this blog post. If you don’t want to miss them, you can subscribe to the comment feed for this post or to the blog category Brain Power.

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Anna LeMind

Anna LeMind

Anna is the founder and lead editor of the website Learning-mind.com. She is passionate about learning new things and reflecting on thought-provoking ideas. She writes about science, psychology and other related topics. She is particularly interested in topics regarding introversion, consciousness and subconscious, perception, human mind's potential, as well as the nature of reality and the universe.
By | 2017-01-13T21:54:43+00:00 January 8th, 2013|Categories: Brain Power|Tags: |4 Comments


  1. DVRicks82 January 10, 2013 at 12:52 am - Reply

    1. Fill the 5L container from the flask, fill the 3L container from the 5L, leaving 2L. Empty the 3L container back into the flask, then pour the 2L of wine in the 5L container into the 3L container. Refill the 5L container from the flask, then top off the 3L container with 1L from the 5L container. Empty the 3L container back into the flask, then fill it again from the 5L container, leaving 1L to give to his friend.

    2. The man climbed up onto a block of ice, which subsequently melted, then evaporated.

    3. Start crossing as soon as he goes into the outpost, you should pass it after 7.5 mins. Before he comes out at the 10 minute mark, turn around and back the rest of the way off the bridge.

    4. 24 empty bottles convert to 6 full, which he can then drink and turn in 4 more, giving another full bottle. Seven bottles to drink, and three empties left over.

    5. Turn the first switch on for 5 minutes, then turn on the second and walk into the room. If the light is on, the second switch controls it. If it is off but hot, the first switch controls it. And if it is off and cool, the third switch.

  2. Sean January 25, 2013 at 3:51 am - Reply

    easier way for #1:

    Fill the 3L. pour that into the 5L
    Fill the 3L again. fill the 5L from the 3L, leaving 1L in the 3L container

  3. Geir May 6, 2013 at 5:14 pm - Reply

    Riddle #3:
    Walk for near 10 minutes (that way you are past the half way mark). Turn around, and wait for the guard. When he tells you to go back, turn again and walk on.

  4. Lewi May 30, 2013 at 5:55 am - Reply

    1. Fill the 3 liter container with wine and put it to the 5 liter one, then do the same process again, and there will be a 1 liter excess from the 3L container

    2. Actually, there is already a hang present in the room, the guy reached it and performed suicide.

    3. Go to the side of the outpost by 7.5 minutes, then wait for 2.5 minutes until the guard comes out and goes back. After going back, proceed to the end of the bridge.

    4. Actually, the collector didn’t returned the bottles, he just collected it. So he cannot get a drink.

    5. Press 2 switches, so that if the lights went on, that means the switch is one of the switches you’ve pressed, or if the light doesn’t light out, that means the switched that is not pressed is the right one.

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5 Clever Riddles: Can You Find the Answer?