I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

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

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

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

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?