If 21x = 79x, what is the value of x?

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

What always comes into a house through the keyhole?

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

Imagine you are in a room with no windows or doors. How will you get out?

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

A man desired to get into his work building, however he had forgotten his code.
However, he did recollect five pieces of information
* Fifth number + Third number = 14
* The fourth number is one more than the second number.
* The first number is one less than twice the second number.
* The second number and the third number equals 10.
* The sum of all five numbers is 30.

What is the code ?

How can you leave a room with two legs and return with six legs?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?