BRAIN TEASERS
The Most Difficult Tasks (page 229)

The Most Difficult Tasks (page 229)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 2281 to 2290.
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Find number abc

If caa3c - 5ab5a = 4b187 find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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Find number abc

If b5501 - cb408 = 1c0ab find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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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: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind

A man walks pass a beggar on t...

A man walks pass a beggar on the corner of the street where he works. The beggar holds out his one hand and the man drops a coin into his hand.
One day the man walks pass the beggar again and notices the beggar is holding hold out both his hands. He asks, "Why are you holding out both of your hands?"
The beggar replied, "You see sir, business is going so well I decided to open another branch."
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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: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Find number abc

If a63cb + 45aac = 13ccbc find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math
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Find number abc

If b260c - 6a0a1 = 351b find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math
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Find number abc

If b7ba0 + ca0ac = aa8bbc find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math
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Find number abc

If 51a8c + c13a1 = 11acb7 find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math
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Which is a winning combination of digits?

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: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Find number abc

If b88a3 + 2c41c = c82c2 find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math
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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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Lord Alexander R. Todd

Born 2 Oct 1907; died 10 Jan 1977 at age 69.Baron Alexander R(obertus) Todd (of Trumpington) was a British biochemist whose research on the structure and synthesis of nucleotides, nucleosides, and nucleotide coenzymes gained him the 1957 Nobel Prize for Chemistry. Nucleotides - found in the chromosomes of the cell-kernels, also in cell plasma - are connected with the units of heredity. In combination with proteins they constitute the virus molecules and many coenzymes are nucleotides of low molecular weight but with a special structure. It was known that they are built up of three quite different "building stones": phosphoric acid, a sugar, and a heterocyclic base containing nitrogen, assembled in one macromolecule. Todd researched how they are connected to each other.
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