Most of us love riddles and puzzles. They give us the opportunity for out of the box thinking and to rattle our brains. They are a good way to pass the time when we are alone or traveling. Apart from being entertaining, riddles are also very good for the development of your mind. Studies have shown that puzzles and problem solving among other activities, stimulate the brain and reduce chances of memory loss later. To get you started, here are some hard riddles to solve with answers.

Hard Riddles with Solutions

1. What row of numbers comes next in this series?
1
11
21
1211
111221
312211
13112221

2. You have a barrel of oil, and you need to measure out just one gallon. How do you do this if you only have a three-gallon container and a five-gallon container?

3. Arnold Schwarzenegger has a big one
Michael j fox has a small one
the pope has one but he never uses it
Bill Clinton Has one and he uses it all the time!
What is it?...

4. If your sock drawer has 6 black socks, 4 brown socks, 8 white socks, and 2 tan socks, how many socks would you have to pull out in the dark to be sure you had a matching pair?

5. A large truck is crossing a bridge 1 mile long. The bridge can only hold 14000 lbs, which is the exact weight of the truck. The truck makes it half way across the bridge and stops. A bird lands on the truck. Does the bridge collapse? Give a reason.

6. Mom and Dad have four daughters, and each daughter has one brother. How many people are in the family?

7. What English word retains the same pronunciation, even after you take away four of its five letters?

8. Why wasn't Bertha put in jail after killing dozens of people?

9. If I say "Everything I tell you is a lie," am I telling you the truth or a lie?

10. How did Mark legally marry three women in Michigan, without divorcing any of them, becoming legally separated, or any of them dying?

11. The paragraph below is very unusual. How quickly can you find out what is so unusual about it?
"Gatsby was walking back from a visit down in Branton Hill's manufacturing district on a Saturday night. A busy day's traffic had its noisy run; and with not many folks in sight, His Honor got along without having to stop to grasp a hand, or talk; for a mayor out of City Hall is a shining mark for any politician. And so, coming to Broadway, a booming bass drum and sounds of singing, told of a small Salvation Army unit carrying on amidst Broadway's night shopping crowds. Gatsby, walking towards that group, saw a young girl, back toward him, just finishing a long, soulful oration ... "
The above passage is taken from the book "Gatsby" written by Ernest Vincent Wright in the late 1930s.

12. While exploring the wild highlands of Ireland, Robert was captured by goblins. Grumpy, the chief of the goblins told him he was allowed one final statement on which would hinge how he would die. If the statement he made was false, he would be boiled in water. If the statement were true, he would be fried in oil. Sine Robert did not like either option, so he made a statement that forced the goblins to release him. What is the one statement he could make to save himself?

Read more on Hard Riddles - Good Brain Teasers.

Hard Riddles for Kids

For kids, here are some hard riddles to enjoy, along with the answers.

1. What gets wetter and wetter the more it dries?

2. What can travel around the world while staying in a corner?

3. Take away the whole and some still remains. What is it?

4. There are two dogs sitting on a porch - one dog is fat and one is thin. The little dog is the son of the fat dog, but the fat dog is not the father of the thin dog.

5. If it has a quart capacity, how many pennies can you put into an empty piggy bank?