BRAIN TEASERS
The Most Difficult Tasks (page 341)

The Most Difficult Tasks (page 341)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 3401 to 3410.
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Calculate the number 6724

NUMBERMANIA: Calculate the number 6724 using numbers [1, 7, 4, 8, 52, 789] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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Find a famous person

Find the first and the last name of a famous person. Text may go in all 8 directions. Length of words in solution: 9,8.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #wordpuzzles
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Can you name the athletes by the picture?

Can you name the athletes by the picture?
Correct answers: 24
The first user who solved this task is Fazil Hashim.
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#brainteasers #riddles #sport

Teacher and student

Teacher: "What is the chemical formula for water?"
Student: "HIJKLMNO."
Teacher: "What are you talking about?"
Student: "Yesterday you said it's H to O!"
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Find the right combination

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #mastermind
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Chess Knight Move

Find the country and its capital city, using the move of a chess knight. First letter is K. Length of words in solution: 8,5,6.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #wordpuzzles #chessknightmove
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Find a famous person

Find the first and the last name of a famous person. Text may go in all 8 directions. Length of words in solution: 4,8.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #wordpuzzles
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Chess Knight Move

Find the country and its capital city, using the move of a chess knight. First letter is B. Length of words in solution: 6,6,4,7.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #wordpuzzles #chessknightmove
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Replace asterisk symbols with ...

Replace asterisk symbols with a letters (***K*N **R*) and guess the name of musician band. Length of words in solution: 6,4.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #music
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Chess Knight Move

Find the country and its capital city, using the move of a chess knight. First letter is M. Length of words in solution: 7,9.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #wordpuzzles #chessknightmove
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What a winning combination?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #mastermind
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The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
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Michael Idvorsky Pupin

Born 4 Oct 1858; died 12 Mar 1935 at age 76. Serbian-American physicist who devised a means of greatly extending the range of long-distance telephone communication by placing loading coils (of wire) at predetermined intervals along the transmitting wire. His parents were illiterate, but they encouraged his education. Pupin became an instructor in mathematical physics (1890) at Columbia University, New York City. In 1986, he discovered that atoms struck by X rays emit secondary X-ray radiation. He also invented a means for taking short-exposure X-ray photographs. The Bell Telephone Company, in 1901, acquired the patent for his invention for long-distance telephony. Pupin won a Pulitzer Prize (1924) for his autobiographical work, From Immigrant to Inventor (1923).
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