Disk colour riddle
899.3K Views
Imagine a disk spinning like a record player turn table. Half of the disk is black and the other is white. Assume you have an unlimited number of colour sensors. How many sensors would you have to place around the disk to determine the direction the disk is spinning? Where would they be placed?
You only need two and they should NOT be placed at opposite sides.
Your Answer
More puzzles to try-
Decipher the Exiting Code
Can you decipher these quotes by Albert Einstein? Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg ...Read More »Who is Ruler
A Queen has twins by Cesarean so it is impossible to tell who was born first. Now the twins are ...Read More »Four chain to join in loop puzzle
You have four chains, Each chain has three links in it. Although it is difficult to cut the links, you ...Read More »Help Arun to come out of maze puzzle
Arun got stuck in a maze with a many-headed Minotaur ready to kill him any instant. He has only one ...Read More »Help the Girl Puzzle
Long ago, in a village somewhere in the Indian subcontinent there lived a poor farmer with his young daughter. life ...Read More »Man in the Rain
There were five men at church, and it started raining while they were outside. The four that ran still got ...Read More »Open the Laptop
John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some ...Read More »Get out of mansion puzzle
You’re in a mansion and the power’s out. You see a green door and a red door. Pick one (it ...Read More »A programmer and butcher shop puzzle
A programmer walks to the butcher shop and buys a KILO of meat. An hour later he comes back upset ...Read More »Rebus Puzzle
What does the below image rebus riddle means ?Read More »Find “THE HIDDEN TIGER” Puzzle
Can you find “THE HIDDEN TIGER” in the picture?Read More »In The Stable
In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men ...Read More »How many trees riddle
In the local wood there are a number of trees. On these trees there are a number of birds. The ...Read More »Dress for everyone
What dress does everyone have, but no one wears?Read More »Find the Odd One Out Riddle
Find the Odd One Out? 84129 32418 47632 36119 67626 72927Read More »You will never see again
What is something you will never see again?Read More »Wingless Bird
I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I ...Read More »The Progression-Mathematics Problem
Suppose that there is a rubber ball which has a property of bouncing back to the original height from which ...Read More »Solve the murder mystery
A couple went to river rafting on a hill station. Two days after their departure, the husband returned alone. He ...Read More »A PING-PONG BALL IN A HOLE
Your last good ping-pong ball fell down into a narrow metal pipe imbedded in concrete one foot deep. How can ...Read More »
Accenture Interview PuzzlesAdobe Interview PuzzlesAge RiddleAkbar Birbal PuzzlesAlgorithm PuzzlesAlphabet riddleAmazon Interview PuzzlesAnalytical MathematicsAptitude PuzzleBank PuzzlesBetting PuzzlesBrain TeasersCalendar PuzzlesCards PuzzlesChess Board PuzzleChess PuzzlesChristmas Puzzlecipher PuzzleCivil Services PuzzleClock time puzzleCognizant Interview PuzzlesCoins PuzzleComputational PuzzleconundrumCoronavirus PuzzleCoupondunia Interview PuzzleCritical Thinking Puzzledata analyticsData Structure Interview QuestionsDecode PuzzleDetective PuzzlesDice PuzzleDictionary Riddlesdifficult riddleEasy Math puzzlesEasy puzzlesEinstein puzzleEnglish RiddleFamily Tree Puzzlefamous puzzleFill in the blanks riddlesFinding Killer RiddlesFlipkart interview puzzlesFunny RiddlesGeneral KnowledgeGeographical PuzzleGoogle Code Jam 2014Google Interview PuzzlesGRE PuzzleHard Puzzle