A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

If eleven plus two equals one, what does nine plus five equal?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

No matter how little or how much you use me, you change me every month. What am I?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

How far can you walk into the woods?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?