BRAIN TEASERS
Math

Math

These are fun math riddles. All of these tricky riddles are based on real math concepts and can be solved with purely math and logic. These are the tasks listed 1 to 10.
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Find number abc

If 99722 - c8869 = b08ba find number abc. Multiple solutions may exist.
Correct answers: 5
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 34
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #riddles
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Calculate the number 5087

NUMBERMANIA: Calculate the number 5087 using numbers [2, 3, 4, 7, 40, 889] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 7
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania

A Heavenly Welcome

A contractor dies in a car accident on his 40th birthday and finds himself at the Pearly Gates. A brass band is playing, the angels are singing a beautiful hymn, there is a huge crowd cheering and shouting his name, and absolutely everyone wants to shake his hand. Just when he thinks things can't possibly get any better, Saint Peter himself runs over, apologizes for not greeting him personally at the Pearly Gates, shakes his hand, and says, "Congratulations son, we've been waiting a long time for you." Totally confused and a little embarrassed, the contractor sheepishly looks at Saint Peter and says "Saint Peter, I tried to lead a God-fearing life, I loved my family, I tried to obey the 10 Commandments, but congratulations for what? I honestly don't remember doing anything really special when I was alive.""Congratulations for what?" says Saint Peter, totally amazed at the man's modesty. "We're celebrating the fact that you lived to be 160 years old! God himself wants to see you!" The contractor is awestruck and can only look at Saint Peter with his mouth wide open. When he regains his power of speech, he looks up at Saint Peter and says "Saint Peter, I lived my life in the eternal hope that when I died I would be judged by God and be found to be worthy, but I only lived to be forty." "That's simply impossible son," says Saint Peter. "We've added up your time sheets."
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Find number abc

If ca4b0 - 206a2 = 3bbaa find number abc. Multiple solutions may exist.
Correct answers: 17
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 2607

NUMBERMANIA: Calculate the number 2607 using numbers [4, 9, 2, 8, 80, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
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 (3, 5, 6, 27, 29, 31, 32, 43, 45, 46, 73, 93, 96) 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: 8
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 7224b - c218c = 2aab1 find number abc. Multiple solutions may exist.
Correct answers: 22
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 1074

NUMBERMANIA: Calculate the number 1074 using numbers [7, 1, 4, 6, 74, 524] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 5
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 4cb6c + c2664 = a652a find number abc. Multiple solutions may exist.
Correct answers: 24
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 6858

NUMBERMANIA: Calculate the number 6858 using numbers [5, 7, 5, 3, 82, 881] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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Paul Bernays

Died 18 Sep 1977 at age 88 (born 17 Oct 1888).Paul Isaak Bernays was a Swiss mathematician and logician who is known for his attempts to develop a unified theory of mathematics. Bernays, influenced by Hilbert's thinking, believed that the whole structure of mathematics could be unified as a single coherent entity. In order to start this process it was necessary to devise a set of axioms on which such a complete theory could be based. He therefore attempted to put set theory on an axiomatic basis to avoid the paradoxes. Between 1937 and 1954 Bernays wrote a whole series of articles in the Journal of Symbolic Logic which attempted to achieve this goal. In 1958 Bernays published Axiomatic Set Theory in which he combined together his work on the axiomatisation of set theory.
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