what's the probability of getting a king or a queen from a pack of 52 cards?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

I make two people out of one. What am I?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Find the missing letter in the last circle logically in the given below picture.

What does does this rebus picture means ?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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.

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?