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100

I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What am I?

Echo


100

What is more useful when it is broken?

An egg

Credit: 100+ Riddles With Answers: Hard, Easy, Famous & Stupid Riddles 

100

There are three apples, and you take two, how many do you have? 

2

Credit: 37 Riddles for Teens with Answers | Reader's Digest  

100

What has 88 keys, but can't even open a single door?

A piano 


100

I have two hands, but I can not scratch myself. What am I?

200

What comes once in a minute, twice in a moment, but never in a thousand years?

200

When you need me, You throw me away. But when you are done with me, You bring me back. What am I?


200

What has 13 hearts but no other organs?

A deck of cards


200

I am something people love or hate. I change people’s appearances and thoughts. If a person takes care of themself I will go up even higher. To some people, I will fool them. To others, I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will never go down. What am I?


200

Only one color, but not one size, stuck at the bottom, yet easily flies. What am I?


 


300

What disappears as soon as you say its name?

300

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

300

You go at red and stop at green. What am I?

300

If fish lived on land, where would they live?

300

What do you lose the moment you share it?

400

You see a boat filled with people. It has not sunk, but when you look again you don’t see a single person on the boat. Why?

they are all married 

Credit: https://www.rd.com/list/challenging-riddles/

400

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

A map

Credit: 27 Hard Riddles to Test Your Smarts with Answers | Reader's Digest 

400

I have keys, but no locks. I have space but no rooms. You can enter, but you can’t go outside. What am I?

400

What thrives when you feed it but dies when you water it?

400

What's lighter than a feather but impossible to hold for much more than a minute?

500

You measure my life in hours and I serve you by expiring. I’m quick when I’m thin and slow when I’m fat. The wind is my enemy.

500

What English word has three consecutive double letters?

Bookkeeper 

500

What can you catch, but not throw?

500

A man was driving his truck. His lights weren’t on. The moon was not out. There were no streetlights. Up ahead, a woman was crossing the street. Luckily, the truck driver stopped in time—how did he see her?

500

What has branches, but no fruit, trunk, or leaves?