Challenging Puzzle

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?




Similar Riddles

Which is Odd One Out and why?

4377

3954

9862

8454

9831

Asked by Neha on 09 Jan 2024


Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

Asked by Neha on 22 Feb 2024

What word is represented by this rebus?

Mary Mary Rebus riddle

Asked by Neha on 29 Apr 2021


If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

English Clockwise

Asked by Neha on 10 Sep 2023

Who can jump higher than a Mountain?

Asked by Neha on 18 Oct 2023

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

Asked by Neha on 06 Jun 2023


It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Asked by Neha on 01 Jul 2021

I have an eye but still cannot see.

Who am I?

Asked by Neha on 28 Oct 2023

What does below pictogram mean?

Compile the Pictogram

Asked by Neha on 11 Aug 2021


In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

Squares in Chess Board

Asked by Neha on 04 Mar 2024

Hot Articles

Amazing Facts

Jigsaw puzzles

Jigsaw puzzles soared in popularity during the great depression, as they provided a cheap, long-lasting, recyclable form of entertainment.