BRAIN TEASERS
The Most Difficult Tasks (page 420)

The Most Difficult Tasks (page 420)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 4191 to 4200.
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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: 30
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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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: 30
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Find number abc

If c79c3 - baabb = 9bbc find number abc. Multiple solutions may exist.
Correct answers: 30
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math

Why did the piece of...

“Why did the piece of cheese go to the gym? To get shredded!”

Jokes of the day - Daily updated jokes. New jokes every day.
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Find number abc

If a70a0 - 11aa6 = 7b1c4 find number abc. Multiple solutions may exist.
Correct answers: 30
The first user who solved this task is Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #math
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Find number abc

If 703ab + 7177c = 14b15a find number abc. Multiple solutions may exist.
Correct answers: 30
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math
[link]

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: 30
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
[link]

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: 30
The first user who solved this task is Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #mastermind
[link]

Find number abc

If 7bb49 - 2249a = 5c85b find number abc. Multiple solutions may exist.
Correct answers: 30
The first user who solved this task is Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #math
[link]

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: 30
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
[link]

Find number abc

If ab1c4 + 6b9a1 = 9707c find number abc. Multiple solutions may exist.
Correct answers: 30
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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Aero-engine

In 1880, Colonel Beaumont's air-engine for propelling railway carriages was successfully tried at Woowich (a little steam is used). His system largely employed in various ways by Paris Compressed Air company was described to the British Association at Newcastle-upon-Tyne (Sep 1889).[* p.30]
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