When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What is the difference between a jeweller and a jailer?

Vin Diesel is pulling a theft and has planned to run away with all the cash kept in the safe. But the only way to open the safe is the 13 character password. He has a set of five clues given to him by a trustworthy source.

Exactly two of the below statements are false.
The password is contained within this sentence.
The password is not in this hint.
The password is within only one of these statements.
At least one of the above statements is a lie.

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

How can you take 2 from 5 and leave 4?

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.

What does this mathematical rebus means ?

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

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Using Only Five 5's and any mathematical operator make sum as 37