See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

What have one eye but still cannot see?

What number when divided in half becomes zero?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

How many triangles can you count in the figure given?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

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?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Which famous Hollywood movie name is hidden in the below rebus?