Brain Teasers & Puzzles
-
When can you add 2 to 11 to get 1 as the correct answer?
Hint: many possible
View SolutionSubmit Solution- 1,466.9K views
- 3 answers
- 1 votes
-
A bridge will collapse in 17 minutes.
4 people want to cross it before it will collapse. It is a dark night and there is only one torch between them.
Only two people can cross at a time.
“A” takes a minute to cross.
“B” takes 2 minutes.
“C” takes 5
and “D” takes 10 minutesHow do they all cross before the bridge collapses?
View SolutionSubmit Solution- 1,488.3K views
- 2 answers
- 2 votes
-
Albert and Bernard just became friends with Cheryl, and they want to know when her birthday is. Cheryl gives them a list of 10 possible dates.
May 15 16 19
June 17 18
July 14 16
August 14 15 17
Cheryl then tells Albert and Bernard separately the month and the day of her birthday, respectively.
Albert: I don’t know when Cheryl’s birthday is, but I know that Bernard does not know, too.
Bernard: At first, I didn’t know when Cheryl’s birthday is, but I know now.
Albert: Then I also know when Cheryl’s birthday is.
When is Cheryl’s birthday?
View SolutionSubmit Solution- 1,465.5K views
- 1 answers
- 0 votes
-
The owner of a banana plantation has a camel. He wants to transport his 3000 bananas to the market, which is located after the desert. The distance between his banana plantation and the market is about 1000 kilometer. So he decided to take his camel to carry the bananas. The camel can carry at the maximum of 1000 bananas at a time, and it eats one banana for every kilometer it travels.
What is the most bananas you can bring over to your destination?
View SolutionSubmit Solution- 1,474.4K views
- 1 answers
- 0 votes
-
You have 100 doors in a row that are all initially closed. you make 100 passes by the doors starting with the first door every time. the first time through you visit every door and toggle the door (if the door is closed, you open it, if its open, you close it). the second time you only visit every 2nd door (door #2, #4, #6). the third time, every 3rd door (door #3, #6, #9), ec, until you only visit the 100th door.
What state are the doors in after the last pass? Which are open which are closed?
Puzzle asked in: Google,Adobe,Amazon,OracleView SolutionSubmit Solution- 1,474.8K views
- 2 answers
- 0 votes
-
There is a building of 100 floors
-If an egg drops from the Nth floor or above it will break.
-If it’s dropped from any floor below, it will not break.
You’re given 2 eggs.
Find NHow many drops you need to make?
What strategy should you adopt to minimize the number egg drops it takes to find the solution?View SolutionSubmit Solution- 1,634.1K views
- 15 answers
- 2 votes
-
You are blindfolded and 10 coins are place in front of you on table.
You are allowed to touch the coins, but can’t tell which way up they are by feel. You are told that there are 5 coins head up, and 5 coins tails up but not which ones are which.
How do you make two piles of coins each with the same number of heads up?
View SolutionSubmit Solution- 1,477.5K views
- 1 answers
- -1 votes
-
Prove that p^2 – 1 is divisible by 24 if p is a prime number greater than 3?
View SolutionSubmit Solution- 1,467.3K views
- 1 answers
- 1 votes
-
- 1,468.6K views
- 1 answers
- 0 votes
-
- 1,470.6K views
- 1 answers
- 0 votes
More puzzles to try-
A Farmer, a Wolf, A Goat, and a Cabbage
A farmer went to a market and bought a wolf, a goat, and a cabbage. On his way home, the ...Read More »How did the detective know?
A man was found dead in his study. He was slumped over his desk and a gun was in his ...Read More »Make a Fire with a Single Stick Puzzle
Can you make a fire with just a single stick?Read More »Skin have I
A skin have I, more eyes than one. I can be very nice when I am done. What am I?Read More »With a neck but no head
Who is with a neck and no head, two arms and no hands?Read More »Go on Vacation
Where do fish go on vacation? Where do songbirds go on vacation? Where do zombies go on vacation? Where do ...Read More »1729 is a Magic Number
Why 1729 is a magic number? Answer Logically.Read More »Prescribed medicine puzzle
A person was prescribed to take two pills (tablets), one each, from the two bottles viz. Bottle A and Bottle ...Read More »People in Bus
You are on a bus. 10 people get on at the first stop. At the next stop 25 people get ...Read More »Can you figure out in one scaling which bag contains lighter coins – which servant should be fired – using digital scales ?
You have 10 bags of gold coins (you wish :)). One of your servants who were responsible for transport of ...Read More »How many oranges bought for 100$
A fruit merchant sells 20 oranges for 10$ thereby making profit of 25%. How many oranges did he buy for ...Read More »Detective gone missing riddle
A detective who was mere days from cracking an international smuggling ring has suddenly gone missing. While inspecting his last-known ...Read More »Time Zones
Client Dempsey living in one of the East Coast states of the U.S. was talking to Landon Donovan, who was ...Read More »False Statement riddle
Which of the following statements are true and which are false ? 1. Only one of the statements is false ...Read More »Think Next
Find The Next Number In The Sequence 30 10 15 13 0 16 -15 ?Read More »Planar configuration of straight connecting lines
Given an even number of points in general positions on the plane (that is, no three points co-linear), can you ...Read More »Relationship in Numbers and Letters
If we tell you that there is a relation between the numbers and letters in the given figure, can you ...Read More »This impossible triangle seems to twist in three dimensions.
This impossible triangle seems to twist in three dimensions.Read More »Spotlight puzzle
A conference room contains three separate wall-mounted spotlights – right, left and front of stage. Each is controlled by its ...Read More »Why would a hair stylist rather cut the hair of two brunettes than one red head?
Why would a hair stylist rather cut the hair of two brunettes than one red head?Read More »