Brain Teasers & Puzzles
-
There is a table with a row of 2014 cards. Each card has a red side and a blue side. We’ll say that a card is red if the color on its visible face is red, and analogously for blue. Two players take turns to do the following move: select any 50 consecutive cards where the left-most card is red, then flip each of those 50 cards (thus, for those 50 cards, turning red cards into blue cards and blue cards into red cards). Both players look at the cards from the same side of the table, so “left-most” means the same to both of the players (that is, you can think of one of the ends of the table as being designated as the left end). When it is a player’s turn, if that player cannot make a move (that is, if there is no way to select 50 consecutive cards the left-most one of which is red), then that player loses and the other player wins. If you are one of the players and all cards are initially red, can you be sure to win, and if so, do you want to be the player who goes first or second?
View SolutionSubmit Solution- 1,800.3K views
- 1 answers
- 0 votes
-
Two arbitrary rectangles are placed to form an “L”. That is, the lower left-hand corner of the two rectangles share the same point. (What I’m trying to say is that there’s an “L” whose “I” and “_” parts have arbitrary widths and heights.) Using only a (pen and a) straightedge (that is, no measuring device and no compass), figure out a way to, with a single straight cut, divide the “L” into two pieces of equal area.
View SolutionSubmit Solution- 1,802.9K views
- 1 answers
- 0 votes
-
A homicide team enters a crime scene where a dead body of a fat old man lies there on the floor with blood oozing out of his head. The victim is holding a gun and a tape recorder lies there by his side. One of the detective picks up the recorder and plays it “I am tired of this life and hence I have decided to relieve myself from the worldly pains”. A gunshot follows the message.
The teams starts investigating a murder investigation.
Why?
View SolutionSubmit Solution- 1,801.8K views
- 3 answers
- 1 votes
-
You had an infinite supply of water and a 5 ml and 3 ml gallons.
How would you measure exactly 4 ml in least number of steps ?
View SolutionSubmit Solution- 1,806.1K views
- 2 answers
- 0 votes
-
A guy claims to do the following thing. He puts a coin in a glass bottle. Then, he shuts the mouth of the bottle with the help of a cork. Now he manages to remove the coin out from the bottle without taking out the cork or breaking the glass bottle.
Do you know how he can do it?
View SolutionSubmit Solution- 1,801.2K views
- 1 answers
- 0 votes
-
Complete the pyramid my replacing ? with the correct number.
1
1 1
2 1
1 2 1 1
1 1 1 2 2 1
? ? ? ? ? ?
? ? ? ? ? ? ? ?View SolutionSubmit Solution- 1,805.1K views
- 2 answers
- 0 votes
-
- 1,810.5K views
- 3 answers
- 0 votes
-
- 1,804.8K views
- 3 answers
- 0 votes
-
A conference room contains three separate wall-mounted spotlights – right, left and front of stage. Each is controlled by its own on-off switch. These three switches are numbered 1, 2 and 3, but they are in a back-room which has no sight of the the spotlights or the conference room (and there are no reflections or shadows or mirrors, and you are alone). How do you identify each switch correctly – right, left, front – if you can only enter the back-room once?
View SolutionSubmit Solution- 1,807.7K views
- 1 answers
- 0 votes
-
An art gallery features a modern work of ‘moving art’. The artist stands by a stack of paintings, each featuring a different number. One of the paintings is displayed on the wall. At certain times the artist removes the painting from the wall and replaces it with a painting from the stack. At 11am, the artist hangs a painting of the number 30. At 4pm he hangs a painting of number 240. At 7.30pm he hangs a painting of number 315. What painting does the artist hang at 9.20pm?
View SolutionSubmit Solution- 1,803.8K views
- 1 answers
- 0 votes
More puzzles to try-

Smallest 4 Digit Number
Find the smallest 4 digit number meeting the following criteria: First digit is 1/3 of the second digit. Third digit ...Read More »
Society Election Votes
At a Society election for president, precisely 963 votes were cast. There is a total of 4 candidates that participate ...Read More »
Decode The Riddle
Decode below three cipher riddles 26 L of the A 7 D of the W 1000 Y in a MRead More »
IAS Tricky Riddle
How can a man go eight days without sleep ?Read More »
Next Number in the Series Puzzle
Next Number in the Series, 5, 16, 49, 104, ?Read More »
Word can be read the same upside down
What five letter word typed in all capital letters can be read the same upside down ?Read More »
Carrots are good for eyes riddle
How do you know carrots are good for your eyes?Read More »
How will you write 6 times?
Assume 9 is twice 5; how will you write 6 times 5 in the same system of notation?Read More »
Wild of Mexico
While exploring the wilds of Mexico, John was captured by hostile wood fairies. Jacob, the powerful chief of the fairies ...Read More »
Two Eggs puzzles
You are given 2 eggs.And there’s 100 floor building. Eggs can be very hard or very fragile means it may ...Read More »
The Hare and the Tortoise
Haretown and Tortoiseville are 50 miles apart. A hare travels at 8 miles per hour from Haretown to Tortoiseville, while ...Read More »
Bear walks past the house Puzzle
A man builds a house with all 4 sides facing south. A bear walks past the house. What color is ...Read More »
Who is the real mother
Who is the real mother?Read More »
Fruit Selling Rate
John is selling fruits. He sells grapes at $30, Dates $25, and a Wolfberry $45. At what price does he ...Read More »
Chicken you cannot order puzzle
A fast food restaurant sells chicken in orders of 6, 9, and 20. What is the largest number of pieces ...Read More »
How much is the ring worth?
At an eBay auction, a woman’s ring and a filigree jewelry box with a hand-painted ceramic top are on sale ...Read More »
How can you create 3 squares moving exactly 3 sticks?

Up is Down
On your arrival a stranger drops you a code “aiamesirsefooftrfiacitnomsdaoesfotenrbcitkmaepedrahtowdo”. with the hint: ”Up is down”. Decode itRead More »
What is my aunt’s share?
When my uncle in Madura died recently, he left i will, instructing his executors to divide his estate oi Rs.1,920,000 ...Read More »
Train timing
Trains travel from one town to another town all day, always on the same track, always going nonstop and at ...Read More »

