BRAIN TEASERS
Math (page 3)

Math (page 3)

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 21 to 30.
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Calculate the number 1071

NUMBERMANIA: Calculate the number 1071 using numbers [4, 5, 3, 7, 25, 224] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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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 (8, 9, 13, 16, 18, 24, 27, 29, 57, 60, 62) 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: 0
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#brainteasers #math #magicsquare
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Find number abc

If a6c5b + cc733 = b355ca find number abc. Multiple solutions may exist.
Correct answers: 0
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#brainteasers #math

Catholic School

Little Zachary was doing very badly in math. His parents had tried everything...tutors, mentors, flash cards, special learning centers. In short, everything they could think of to help his math.
Finally, in a last ditch effort, they took Zachary down and enrolled him In the local Catholic school. After the first day, little Zachary came home with a very serious look on his face. He didn't even kiss his mother hello. Instead, he went straight to his room and started studying.
Books and papers were spread out all over the room and little Zachary was hard at work. His mother was amazed. She called him down to dinner.
To her shock, the minute he was done, he marched back to his room without a word, and in no time, he was back hitting the books as hard as before.
This went on for some time, day after day, while the mother tried to understand what made all the difference.
Finally, little Zachary brought home his report Card.. He quietly laid it on the table, went up to his room and hit the books. With great trepidation, His Mom looked at it and to her great surprise, Little Zachary got an 'A' in math. She could no longer hold her curiosity.. She went to his room and said, 'Son, what was it? Was it the nuns?' Little Zachary looked at her and shook his head, no.. 'Well, then,' she replied, Was it the books, the discipline, the structure, the uniforms? WHAT WAS IT?'
Little Zachary looked at her and said, 'Well, on the first day of school when I saw that guy nailed to the plus sign, I knew they weren't fooling around.'
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Calculate the number 373

NUMBERMANIA: Calculate the number 373 using numbers [7, 9, 7, 8, 99, 288] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania
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Find number abc

If 704ca + cac1c = 9aa3b find number abc. Multiple solutions may exist.
Correct answers: 2
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#brainteasers #math
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Calculate the number 2239

NUMBERMANIA: Calculate the number 2239 using numbers [6, 2, 1, 1, 28, 735] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#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, 4, 11, 19, 20, 27, 42, 43, 50, 90) 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: 0
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 3bc70 + c7c7b = a9b4b find number abc. Multiple solutions may exist.
Correct answers: 0
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#brainteasers #math
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Calculate the number 3424

NUMBERMANIA: Calculate the number 3424 using numbers [1, 8, 7, 2, 55, 571] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 514ac - 2baa5 = 24b02 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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François Hennébique

Born 25 Apr 1842; died 20 Mar 1921 at age 78.French engineer who was an important leader in experimenting with various ways of reinforcing concrete with iron and steel. At the Paris Exposition of 1867, Hennebique saw Joseph Monier's tubs and tanks built of concrete reinforced with wire mesh, and began experimenting with ways to apply this new material to building construction, setting up his own firm (1867). First using reinforced-concrete floor slabs (1879), he progressed to a complete building system, patented 1892, using his invention of a method using hooked connections on reinforcing bars. Hennébique introduced his techniques into Britain when he was commissioned to build a new flour mill in Swansea (completed 1898). This was the first multistorey reinforced concrete building in Britain.
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