In the four images below, can you find the odd one out?

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.

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

Who is He ?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Find the next number in the series below.

6 18 270 72090 ?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

What goes up but never comes down?

Can you count the number of quadrilaterals in the picture below?