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?

What four weights can be used to balance from 1 to 30 pounds?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

Which digit occurred maximum times between the number 1 and 1000?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

Can you place six X (crosses) in below board without making three in a row in any way ?

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

The centre of the third figure is empty. What digit should fit inside?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What is the last thing you take off before bed?