BRAIN TEASERS
Math (page 214)

Math (page 214)

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 2131 to 2140.
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MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (16, 19, 22, 23, 25, 29, 59, 61, 64, 68, 72) 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: 19
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 a555b - 256ba = 6acbc find number abc. Multiple solutions may exist.
Correct answers: 31
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 6263

NUMBERMANIA: Calculate the number 6263 using numbers [8, 8, 6, 9, 70, 800] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 16
The first user who solved this task is Mita Kojd.
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#brainteasers #math #numbermania

Animal Rotation

Q: What animal rotates at least 200 times after it dies?
A: A rotisserie chicken.
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Find number abc

If c22b2 + 6a02c = aa3307 find number abc. Multiple solutions may exist.
Correct answers: 36
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 670

NUMBERMANIA: Calculate the number 670 using numbers [3, 2, 8, 5, 76, 887] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 27
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 (9, 11, 16, 29, 31, 36, 43, 45, 50, 59, 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.
Correct answers: 27
The first user who solved this task is NĂ­lton CorrĂȘa De Sousa.
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#brainteasers #math #magicsquare
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After visiting my Great Aunt...

After visiting my Great Aunt Annie, I travelled home in her old jalopy. The car was old and battered, it had a leak from the petrol tank, and I was stuck in second gear. This meant that I could only travel along at a steady 30 miles per hour and managed a paltry 20 miles per gallon of fuel. At the start of the journey I had placed exactly 10 gallons of fuel into the tank. I knew though, that the fuel tank lost fuel at the rate of half a gallon per hour. Just as I arrived home, the car stopped because it had run out of fuel and I had only just made it. How far was it from my Great Aunt's to my home?
Correct answers: 29
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #riddles
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Find number abc

If b496a + cab50 = a06baa find number abc. Multiple solutions may exist.
Correct answers: 53
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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What is the next number in this series?

Look at the series (1, 5, 15, 30, 150, 450, 900, 4500, ?), determine the pattern, and find the value of the next number!
Correct answers: 75
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #riddles
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Calculate the number 1451

NUMBERMANIA: Calculate the number 1451 using numbers [6, 1, 6, 7, 72, 509] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 16
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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Johann Friedrich Miescher

Born 13 Aug 1844; died 26 Aug 1895 at age 51.Swiss biochemist and biologist who studied cell metabolism and discovered nucleic acids. In 1869, while working under Ernst Hoppe-Seyler at the University of Tübingen, Miescher investigated a substance containing both phosphorus and nitrogen in the nuclei of white blood cells found in pus. The substance, first named nuclein because it seemed to come from cell nuclei, became known as nucleic acid after 1874, when Miescher separated it into a protein and an acid molecule. It is now known as deoxyribonucleic acid (DNA).
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