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 94a58 + a64b9 = aa059c find number abc. Multiple solutions may exist.
Correct answers: 9
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 1783

NUMBERMANIA: Calculate the number 1783 using numbers [7, 6, 8, 3, 26, 270] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 6
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 (15, 22, 23, 25, 29, 32, 33, 37, 38, 39, 60, 61, 67) 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: 7
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #magicsquare

Cowboy in Church

One Sunday a cowboy went to church. When he entered, he saw that he and the preacher were the only ones present. The preacher asked the cowboy if he wanted him to go ahead and preach.
The cowboy said, "I'm not too smart, but if I went to feed my cattle and only one showed up, I'd still feed him."So the minister began his sermon.
One hour passed, then two hours, then two-and-a-half hours. The preacher finally finished and came down to ask the cowboy how he liked the sermon.
The cowboy answered slowly, "Well, I'm not very smart, but if I went to feed my cattle and only one showed up, I sure wouldn't feed him all the hay."
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Find number abc

If 21a4c + c10c2 = b2a7b find number abc. Multiple solutions may exist.
Correct answers: 15
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 914

NUMBERMANIA: Calculate the number 914 using numbers [1, 5, 9, 5, 82, 544] 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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Find number abc

If 8c4aa - ab553 = 2b9c3 find number abc. Multiple solutions may exist.
Correct answers: 25
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 790

NUMBERMANIA: Calculate the number 790 using numbers [9, 2, 7, 7, 16, 718] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
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, 20, 21, 22, 30, 32, 33, 41, 70, 91) 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: 14
The first user who solved this task is NĂ­lton CorrĂȘa De Sousa.
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#brainteasers #math #magicsquare
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Find number abc

If ab29c + a01cb = 12bcb7 find number abc. Multiple solutions may exist.
Correct answers: 19
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 258

NUMBERMANIA: Calculate the number 258 using numbers [5, 5, 2, 2, 80, 560] 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
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The aim is to place the some numbers from the list (15, 18, 19, 21, 24, 25, 35, 38, 39, 67, 79, 97) 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.
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Ernst (Gustav Benjamin) von Bergmann

Born 16 Dec 1836; died 25 Mar 1907 at age 70.German surgeon and author and author of a classic work on cranial surgery, Die Chirurgische Behandlung der Hirnkrankheiten (1888; “The Surgical Treatment of Brain Disorders”). In 1870, Bergmann wrote the first textbook on nervous system surgery. In addition to his contributions to surgery, Bergmann is noted for introducing steam sterilization of instruments and dressings (1886), and in 1891 he introduced aseptic methods to the practice of surgery.
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