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?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

81 x 9 = 801. What must you do to make the this equation true?

A father's child, a mother's child, yet no one's son.

Who am I?

How do you go from 98 to 720 using just one letter?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

Can you make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

Can you find the odd number in the following?

2716, 4135, 5321 and 7145