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

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?

Can you start the fire using two pieces of wood?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

Find the number of squares in the below picture

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

Can you find out which options fits best with the missing column?

What number divided by 4 is the same as that number minus 4?

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Victor' decides to walk through all the flats, he finds all the flats except flat-62.
Victor later founds that the local of the town have given it another name.

What is the name of the Flat?

I am sure no one can have two things for dinner. what are they?