BRAIN TEASERS
The Most Difficult Tasks (page 603)

The Most Difficult Tasks (page 603)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 6021 to 6030.
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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: 50
The first user who solved this task is Manguexa Wagle.
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#brainteasers #mastermind
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Find number abc

If 70a97 - 11a14 = c90ba find number abc. Multiple solutions may exist.
Correct answers: 50
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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There is a clothing store in...

There is a clothing store in Bartlesville. The owner has devised his own method of pricing items. A vest costs $20, socks cost $25, a tie costs $15 and a blouse costs $30. Using the method, how much would a pair of underwear cost?
Correct answers: 50
The first user who solved this task is H Tav.
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#brainteasers #math #riddles

Chinese Business Trip

A man went on a business trip to China and wanted to buy some gifts for his kids. He went to a shop and found a nice looking CD player. Wary of buying inferior goods, he asked the shopkeeper, 'What would happened if this does not work?'
The shopkeeper quietly points to the only sign in English that reads, 'GUARANTEE NO SPOILT'.
Feeling assured, he paid for the CD player and returns to his hotel. He tried to use the CD player after returning to the hotel but it would not even switch on.
He quickly return to the shop and asked for a refund or an exchange for another unit. When the shopkeeper refused to give either, the man points to the sign assuring him of a guarantee.
The shopkeeper then said, 'Brother, you are in China. We read from the right to the left.'

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Remove 6 letters from this seq...

Remove 6 letters from this sequence (EDVERYRNBTHINHGW) to reveal a familiar English word.
Correct answers: 50
The first user who solved this task is Manguexa Wagle.
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#brainteasers #wordpuzzles
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Find number abc

If 7b458 - ab8cc = ba58 find number abc. Multiple solutions may exist.
Correct answers: 50
The first user who solved this task is Thinh Ddh.
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#brainteasers #math
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Remove 3 letters from this seq...

Remove 3 letters from this sequence (LOAAWYERIS) to reveal a familiar English word.
Correct answers: 50
The first user who solved this task is On On Lunarbasil.
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#brainteasers #wordpuzzles
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What was never scared but be...

What was never scared but became petrified, can't make a bird but can make a bat, can't live in a house but would die to have one. What is it?
Correct answers: 50
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #riddles
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Find number abc

If 91cba + a6403 = 11b9bc find number abc. Multiple solutions may exist.
Correct answers: 50
The first user who solved this task is Linda Tate Young.
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#brainteasers #math
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Remove 6 letters from this seq...

Remove 6 letters from this sequence (STHZINEKAIVNGU) to reveal a familiar English word.
Correct answers: 50
The first user who solved this task is On On Lunarbasil.
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#brainteasers #wordpuzzles
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Guess the name of musician

Look carefully caricature and guess the name of musician.
Correct answers: 50
The first user who solved this task is On On Lunarbasil.
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#brainteasers #music
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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.
Last Correct Answer

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Jens C. Skou

Born 8 Oct 1918.Danish biophysicist who (with Paul D. Boyer and John E. Walker) was awarded the Nobel Prize for Chemistry in 1997 for his discovery of the enzyme called sodium-potassium-activated adenosine triphosphatase (Na+-K+ ATPase). This enzyme, which is found in the plasma membrane of animal cells, maintains the balance of sodium and potassium ions in the living cell. Skou used as experimental material finely ground crab nerve membranes. The enzyme pumps sodium out of the cell and potassium into it, thereby maintaining a high intracellular concentration of potassium and a low concentration of sodium relative to the surrounding external environment. He was first to identify an enzyme that moves substances through cell membranes, a key function of all cells.
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