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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Calculate the number 9712

NUMBERMANIA: Calculate the number 9712 using numbers [3, 7, 4, 6, 16, 962] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 5
The first user who solved this task is Fazil Hashim.
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#brainteasers #math #numbermania
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Find number abc

If 80c92 - aa21b = 2a479 find number abc. Multiple solutions may exist.
Correct answers: 10
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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Calculate the number 6648

NUMBERMANIA: Calculate the number 6648 using numbers [6, 7, 9, 1, 10, 443] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 5
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania

What's the trick?

A man went to the police station wishing to speak with the burglar who had broken into his house the night before.

"You'll get your chance in court," said the desk sergeant.

"No, no, no!" insisted the man. "I want to know how he got into the house without waking my wife. I've been trying to do that for years!"

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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (3, 5, 7, 10, 12, 13, 18, 36, 69, 71, 77, 78) 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: 6
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 c7a57 + ac7b2 = 812ab find number abc. Multiple solutions may exist.
Correct answers: 14
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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Calculate the number 1937

NUMBERMANIA: Calculate the number 1937 using numbers [1, 2, 6, 3, 73, 639] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 4
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania
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Find number abc

If c780b - a2cb0 = bbabb find number abc. Multiple solutions may exist.
Correct answers: 15
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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Calculate the number 2234

NUMBERMANIA: Calculate the number 2234 using numbers [6, 2, 8, 7, 14, 696] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 5
The first user who solved this task is Thinh Ddh.
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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 (2, 3, 5, 6, 8, 11, 14, 15, 17, 20, 25, 76) 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 Nasrin 24 T.
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#brainteasers #math #magicsquare
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Find number abc

If 6abc3 + a93c9 = caab2 find number abc. Multiple solutions may exist.
Correct answers: 11
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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If 80c92 - aa21b = 2a479 find number abc. Multiple solutions may exist.
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Gustav Friedrich Klemm

Born 12 Nov 1802; died 26 Aug 1867 at age 64.German anthropologist who developed the concept of three stages of cultural evolution and is thought to have influenced the prominent English anthropologist Sir Edward Burnett Tylor. Klemm spent most of his life as director of the royal library at Dresden (from 1831). He distinguishing three stages of cultural evolution (which he identified as those of savagery, domestication, and freedom). Klemm divided mankind into active and inactive races and believed that peoples differed in mentality and temperament. He wrote about this 10 volume work, Allgemeine Kulturgeschichte der Menschheit.[Death date uncertain: given by Enc. Brit. as died 25/26 Aug 1867.]
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