Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

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 ?

What can go up a chimney down, but can’t go down a chimney up?

Why is the Hole below a Lock?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

What does does this rebus picture means ?

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?