BRAIN TEASERS
Brain Teasers (page 347)

Brain Teasers (page 347)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 3461 to 3470.
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Calculate the number 2811

NUMBERMANIA: Calculate the number 2811 using numbers [3, 1, 4, 3, 37, 896] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 22
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (11, 12, 15, 17, 18, 21, 36, 37, 40, 59, 87) 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: 24
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #magicsquare
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Find number abc

If ac5a1 + b52c9 = 155b9c find number abc. Multiple solutions may exist.
Correct answers: 40
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math

Intelligent Preference

Q: Why do men prefer intelligent women?
A: Opposites attract.
Jokes of the day - Daily updated jokes. New jokes every day.
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Chess Knight Move

Find the title of novel, using the move of a chess knight. First letter is M. Length of words in solution: 3,7,2,3,9.
Correct answers: 20
The first user who solved this task is Alfa Omega.
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#brainteasers #wordpuzzles #chessknightmove
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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: 48
The first user who solved this task is NĂ­lton CorrĂȘa De Sousa.
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#brainteasers #mastermind
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Calculate the number 2142

NUMBERMANIA: Calculate the number 2142 using numbers [5, 4, 5, 7, 85, 393] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 19
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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Find number abc

If ba9aa - 70b05 = cacac find number abc. Multiple solutions may exist.
Correct answers: 38
The first user who solved this task is Djordje Timotijevic.
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#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: 37
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #mastermind
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Chess Knight Move

Find the title of novel, using the move of a chess knight. First letter is L. Length of words in solution: 2,12.
Correct answers: 28
The first user who solved this task is Thinh Ddh.
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#brainteasers #wordpuzzles #chessknightmove
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Calculate the number 1153

NUMBERMANIA: Calculate the number 1153 using numbers [8, 8, 3, 7, 29, 926] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 23
The first user who solved this task is Djordje Timotijevic.
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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Friedrich Mohs

Died 29 Sep 1839 at age 66 (born 29 Jan 1773).German mineralogist who devised the Mohs scale to compare mineral harness, illustrated by ten common or readily-available minerals. They are ranked by which can scratch another. At the beginning of his scale, 1 to 3, are talc, gypsum and calcite. At the top, the hardest 8 to 10, are topaz (including emerald and aquamarine), corundum (including as varieties sapphire and ruby) and diamond. Diamond is known for its common use to edge cutting tools, because it is four times as hard than even corundum. Interestingly, gold and silver come in the 2.5 to 3 range, which is comparable to the hardness of a fingernail (2.5). Mohs proposed this non-linear hardness scale in 1812, after spending a year as curator organizing an institution's mineral collection. By 1820, his scale was widely used by mineralogists, and he contined to refine it.«
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