The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

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.

Ten coins have been arranged as you can see in the given picture. In this arrangement, a triangle is formed pointing upwards. You have to invert the position of the triangle and make it point downwards while changing the position of 3 coins only. Can you do it?

What can you serve, but never eat?

Can you name four days which start with the letter 'T'?

Which digit occurred maximum times between the number 1 and 1000?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Identify the 10 differences between the two given pictures.

What kind of tree can you carry in your hand?