# Best hard riddles

## Light as a feather

What is as light as a feather but impossible to hold for several minutes?
76.86 %

## One equals two

Consider the following explanation for why 1=2: 1. Start out Let y = x 2. Multiply through by x xy = x2 3. Subtract y2 from each side xy - y2 = x2 - y2 4. Factor each side y(x-y) = (x+y)(x-y) 5. Divide both sides by (x-y) y = x+y 6. Divide both sides by y y/y = x/y + y/y 7. And so... 1 = x/y + 1 8. Since x=y, x/y = 1 1 = 1 + 1 8. And so... 1 = 2 How is this possible?
Step 5 is invalid, because we are dividing by (x-y), and since x=y, we are thus dividing by 0. This is an invalid mathematical operation (division by 0), and so by not followinng basic mathematical rules, we are able to get strange results like these.
76.83 %

## Gambling house

Even though the odds are always in favor of the gambling house, why does the establishment insist on a house limit on stakes?
Every casino in the world would go bankrupt without a house limit on stakes. Without it, gamblers would keep doubling their stakes until they won. No matter how bad a losing streak they were on, they would eventually win. For more information, search: Martingale
76.80 %
funny

## Tree's favorite drink

What is a tree's favorite drink?
Root beer.
76.77 %
funny

## Three stories tall

What's three stories tall and moves at 15 mph through the jungle?
76.74 %
crazy

## Similarity between a nose and an athlete

What is the similarity between a nose and an athlete?
Both "run".
76.74 %
funny

## What did the rug say to the floor?

What did the rug say to the floor?
Don't move, I've got you covered.
76.68 %
funny

## Worm

What is a worm that does not wriggle?
A bookworm.
76.68 %
funny

## The astronauts cavity

What do the dentists call the astronauts cavity?
A black hole.
76.68 %