How can you write nineteen in a manner that if we take out one, it becomes twenty?

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 pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

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?

You need to arrange three 7 and mathematical symbols to form number 1?

At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

When 99 is considered higher than 100?

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

What famous saying does this rebus mean?

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