I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Jessica is telling her friends this story and asks them to guess if it’s the truth or a lie: “There was a man sitting in a house at night that had no lights on at all. There was no lamp, no candle, and no other source of light. Yet, he sat in the house and read his book happily.” Her friends say she’s lying, but Jessica corrects them and says she’s telling the truth. Jessica’s story is true—but how?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

A blonde put eyeliner on her head. Why?

Can you decipher the below rebus?

PBLUESAISNUERSES

By using 'because' continuously three times, can you make an English statement ?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?