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Brain teasers have been used since centuries to challenge intelligence of people and have passed the test of time by virtue of how imaginative and fun they can be. Some answers are intelligent while some are silly, but you always enjoy them. You can have fun while you get your logic skills tested.

It could be the most mind-wrecking questions with the silliest of the answers. Either way, brain teasers are always fun!

While some are imaginative, tough, and challenging, others sometimes, simply require more of common sense! Looking for a way to test your intelligence? We've compiled some easy as well as hard brain teasers below.

Remember, most brain teasers for adults generally rely on double meaning and playing with words, so you might easily get frustrated without a bit of luck! However, have patience, use your wit, and crack the answer.


1) Guess the next three letters in the series.
GTNTL .......

2) Three identical light switches operate three identical bulbs in another room. Which switch corresponds to which bulb? You are allowed only one trip into that room.

3) A boy is walking down the road with a doctor. While the boy is the doctor's son, the doctor isn't the boy's father. Then who is the doctor?

4) What can you hold without ever touching, or using your hands?

5) I am the beginning of sorrow and the end of sickness. You cannot express happiness without me yet I am in the midst of crosses. I am always in risk yet never in danger. You may find me in the sun but I am never out of darkness.

6) When you have me, you immediately feel like sharing me. But, if you do share me, you don't have me.

7) Joseph and Lena are found dead on the floor with some water around. The windows are open and a strong wind draft is blowing the curtains around. How did they die?


8) Which travels faster? Hot or Cold?

9) What has a mouth but cannot eat, what moves but has no legs and what has a bank but cannot put money in it?

10) A man is trapped in a sealed room with only two doors. One of them leads to a fire-breathing dragon, while the other one leads to a room made up of magnifying glass, any one who dares to enter it is charred off before they know it. How does he escape?

11) What makes more as you take them?

12) You're stranded in a deserted place when you discover an old cabin. It's freezing outside and you only have one match, a candle, a newspaper, and some hay and twigs. What do you light first?

13) When can you add two to eleven and get one as the correct answer?

14) A man wanted to encrypt his password but he needed to do it in a way so that he could remember it. He had to use 7 characters consisting of letters and numbers only (no symbols like ! or <). In order to remember it, he wrote down "You force heaven to be empty." Can you tell me what his password was?

15) A man condemned to death has the option of picking one of the mentioned three rooms. The first room is a furnace filled with feeding flames, the second has armed men with loaded guns while the third has lions starving for years. Which one should the man choose?

16) Arnold Schwarzenegger has a long one. Michael J. Fox has a short one. Madonna doesn't use hers. Bill Clinton always uses his. The Pope never uses his. What is it?

17) First I threw away the outside and cooked the inside, then I ate the outside and threw away the inside, what did I eat?


18) In which direction is the bus going and why? Left or right are the only possible answers.

19) A man wanted to work but he could not log in to his computer terminal successfully. He tried twice but his password didn't work. He suddenly remembered that the passwords are reset every month for security purposes. So he called his boss and said,
Man-"Hey boss, my password is out of date."
Boss-"Yes, that's right. The password is different, listen carefully, I am sure, you can figure out the new one. The new one has the same amount of letters as your old password, but only four of the letters are the same."
Man: "Thanks boss." With that he could correctly log into his station. Can you tell me his new and old passwords?

20) The number 8,549,176,320 is a unique number. Can you tell me what is so special about it?

21) A man is headed to a mountain along with a lion, a goat and a basket of vegetables. On the way, he needs to cross a river and the boat can only carry two things at a time. If he takes the vegetables, the lion will eat the goat. If he takes the lion, the goat will eat the vegetables. How does he cross the river?

How to Find Answers for Brain Teasers

These days, brain teasers are a part of job interviews. They are helpful in psychoanalysis of the candidate. While attempting to solve hard riddles, keep in mind that they are meant to trick you. The following hints can hopefully help you unlock your inner riddle master! Here is how to deal with a brain teaser:

Search for any language that could have multiple meanings, and guard against your own assumptions.

If the riddle contains a few different lines, break the riddle into manageable chunks.

Analyze them individually to come up with any possible riddle answers.

Check the key words and dissect them to figure out how they may be misleading you.

Riddles with letters basically are questions that poke fun at the alphabet. For instance, "How do you file an ax?" Answer: "Under the letter A!"

The joy of brain teasers is often in how mundane, yet non-perceivable the solution is to us. For instance, "How would you differentiate a good lawyer and a great lawyer?" - The answer is "A lawyer who knows the law is a good lawyer while a lawyer who knows the judge is a great lawyer!"

Sometimes, there are optical illusions which contain deceptive or misleading pictures. You are expected to concentrate your eye and mind on the picture and find out the hidden answer. Like the misleading pictures, brain teasers also entangle the mind of the reader and make him forget his worries, at least for a while. Thus, they really work as stress relievers for adults.