ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

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

Out of three Friends John, Jacob and Jonny one of them is a king, one is a bureaucrat, and one is a Spy.

The king always tells the truth, the bureaucrat always lies, and the Spy can either lie or tell the truth.

John says: Jonny is a bureaucrat
Jacob says: John is a king
Jonny says: I am a Spy

Tell me, Who is the king, who is the bureaucrat, and who is the Spy?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

What can go through glass without breaking it?

Prove that twice of ten is the same as twice of eleven.

Count the number of triangles in the picture below: