Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

There are three light switches outside a room. One of the switches is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

Name a key which is hardest to turn.

What do you answer even though it never asks you questions?

Identify the hidden meaning behind this picture?