BRAIN TEASERS
Brain Teasers (page 292)

Brain Teasers (page 292)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 2911 to 2920.
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Calculate the number 2636

NUMBERMANIA: Calculate the number 2636 using numbers [3, 2, 7, 7, 15, 279] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
The first user who solved this task is Nílton Corrêa De Sousa.
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#brainteasers #math #numbermania
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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.
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#brainteasers #math
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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: 6,6.
Correct answers: 27
The first user who solved this task is Nílton Corrêa De Sousa.
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#brainteasers #wordpuzzles

There is more money being spen...

There is more money being spent on breast implants and Viagra today, than on Alzheimer's research. This means that by 2040, there should be a large elderly population with perky boobs, huge erections, and absolutely no recollection of what to do with them.
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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 Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2942

NUMBERMANIA: Calculate the number 2942 using numbers [3, 7, 4, 5, 49, 279] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
The first user who solved this task is Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A+B+C

The aim is to place the some numbers from the list (5, 6, 7, 8, 9, 10, 48, 50, 52) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B+C.
Correct answers: 15
The first user who solved this task is Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #math #magicsquare
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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: 6,5.
Correct answers: 34
The first user who solved this task is Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #wordpuzzles
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Find number abc

If aa4ba - 59b06 = c8cbc find number abc. Multiple solutions may exist.
Correct answers: 20
The first user who solved this task is Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #math
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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: 26
The first user who solved this task is Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2040

NUMBERMANIA: Calculate the number 2040 using numbers [5, 2, 7, 1, 89, 659] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
The first user who solved this task is Nílton Corrêa De Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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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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Production of ammonia

In 1910, a U.S. patent for the Production of Ammonia was issued to Fritz Haber and Robert Le Rossignol (No. 971,501). This process could produce ammonia on a large scale directly from its component gases, hydrogen and nitrogen, by passing a mixture of them over heated finely-divided osmium metal used as a catalyst. A typical pressure of 175 atmospheres and a temperature of 550ºC could easily give an 8% by volume yield of ammonia. Although nitrogen makes up 80% of the air, as a gas it is quite unreactive. Despite its ready availability, nitrogen gas had previously been difficult to combine in a chemical form. Once nitrogen has been chemically combined in the form of ammonia, many other nitrogen compounds can be made.«
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