Brain Teaser 1
Brain Teaser 2
Brain Teaser 4
non-sense
100
What freezes after it is overheated?
COMPUTER
100
What day would yesterday be if Thursday was 4 days before the day after tomorrow?
Friday
100
No matter how little or how much you use me, you change me every month. What am I?
A calendar
100
What is made of water but if you put it into water it will die?
An Icecube
200
Tear one off and scratch my head,
What once was red is black instead.
What is it?
MatchStick
200
Which is the missing number in the yellow circle? 
The missing number is 12. Each number is equal to the sum of the digits of the numbers pointing towards it.
200
What has cities, but no houses; forests, but no trees; and water, but no fish?
A Map
200
What building has the most stories?
The Library
300
I am white when I am dirty, and deep green when I am clean. What am I?
A Black Board
300
What do the letter T and an island have in common?
They are both in the middle of water!
300
How does a man cross a river without getting wet?
The lake is fozen.
300
I have branches, but no fruit, trunk or leaves. What am I?
A Bank
400
A bus driver goes the wrong way on a one way street. He passes the cops but they don't stop him. Why?
BECAUSE HE WAS WALKING
400
Lose me once, I’ll come back stronger. Lose me twice, I’ll leave forever. What am I?
A TOOTH.
400
What can be stolen, mistaken, or altered, yet never leaves you your entire life?
Your Identity
400
What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
NOON
500
I am big on Saturday and Sunday.
I am small on Tuesday, Wednesday, and Thursday.
I am not on Monday and Friday.
What am I?
The letter S
500
If you are to keep it, you must first give it to me. What is it?
Your Words
500
What tastes better than it smells?
A Tongue
500
Which tire doesn’t move when a car turns right?
The Spare Tire