BRAIN TEASERS
Brain Teasers (page 209)

Brain Teasers (page 209)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 2081 to 2090.
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Find number abc

If 464bc - 250a7 = 2bacb 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: 18
The first user who solved this task is Nasrin 24 T.
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#brainteasers #mastermind
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Calculate the number 3216

NUMBERMANIA: Calculate the number 3216 using numbers [3, 5, 2, 4, 16, 982] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 8
The first user who solved this task is NĂ­lton CorrĂȘa de Sousa.
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#brainteasers #math #numbermania

Boogers and spinach

What is the differance between boogers and spinach?

You can't get your kids to eat spinach.

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

If 3bba4 - 2c008 = 5b8c find number abc. Multiple solutions may exist.
Correct answers: 21
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: 21
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1125

NUMBERMANIA: Calculate the number 1125 using numbers [5, 4, 3, 3, 43, 125] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 14
The first user who solved this task is Nasrin 24 T.
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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 (4, 7, 8, 14, 17, 18, 32, 36, 39, 40, 84) 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: 12
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #magicsquare
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Find number abc

If abb84 + 4a895 = cca9a9 find number abc. Multiple solutions may exist.
Correct answers: 18
The first user who solved this task is Nasrin 24 T.
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#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: 20
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 1393

NUMBERMANIA: Calculate the number 1393 using numbers [7, 8, 1, 7, 12, 164] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
The first user who solved this task is Nasrin 24 T.
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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Karl George Christian von Staudt

Died 1 Jun 1867 at age 69 (born 24 Jan 1798).German mathematician who developed the first complete theory of imaginary points, lines, and planes in projective geometry. His early work was on determining the orbit of a comet and, based on this work, he received his doctorate. He showed how to construct a regular inscribed polygon of 17 sides using only compasses. He turned to projective geometry and Bernoulli numbers (discovered by Jacob Bernoulli). An important work on projective geometry, Geometrie der Lage was published in 1847. It was the first work to completely free projective geometry from any metrical basis. He also gave a geometric solution to quadratic equations.
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