BRAIN TEASERS
The Most Difficult Tasks

The Most Difficult Tasks

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Calculate the number 5117

NUMBERMANIA: Calculate the number 5117 using numbers [8, 3, 2, 2, 35, 928] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #numbermania
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Find number abc

If c4ab5 + c75b1 = 171cab find number abc. Multiple solutions may exist.
Correct answers: 5
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (3, 4, 5, 6, 7, 9, 18, 33, 39, 40, 43, 83, 88) 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: 5
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #magicsquare

A woman complained to her vete...

A woman complained to her veterinarian that her dog would start humping her every time he came into the house. "Is there anything you can do?" she asked.

The doctor said, "Well, we could castrate him, and then he would no longer have a sex drive."

The woman replies, "That seems awfully harsh. Couldn't you just clip his nails and do something about his breath?"
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Calculate the number 3577

NUMBERMANIA: Calculate the number 3577 using numbers [8, 5, 8, 4, 11, 681] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 5
The first user who solved this task is Nasrin 24 T.
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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 (18, 20, 22, 24, 26, 29, 31, 36, 40, 45, 59, 89, 93) 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: 5
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #magicsquare
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Calculate the number 1271

NUMBERMANIA: Calculate the number 1271 using numbers [7, 2, 7, 3, 92, 938] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 5
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #numbermania
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Calculate 876+876-876

If 123+741-900=2196 and 900+144-876=6569 then 876+876-876=?
Correct answers: 5
The first user who solved this task is Sanja Šabović.
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#brainteasers #math #riddles
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Decrypt hidden message

Can you decrypt hidden message (1C42 92S1 T5B38 OV1 IS B3LT5B38S 1C4ROVGC4)?
Correct answers: 5
The first user who solved this task is Sanja Šabović.
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#brainteasers #wordpuzzles #riddles
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Calculate the number 1050

NUMBERMANIA: Calculate the number 1050 using numbers [7, 2, 2, 2, 16, 486] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 6
The first user who solved this task is Nasrin 24 T.
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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 (12, 13, 19, 29, 30, 36, 47, 48, 54, 73) 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.
CHECK ANSWER
#brainteasers #math #magicsquare
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If c4ab5 + c75b1 = 171cab find number abc. Multiple solutions may exist.
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Ivan Petrovich Pavlov

Born 27 Sep 1849; died 27 Feb 1936 at age 86. Russian physiologist, who was awarded the 1904 Nobel Prize in Physiology or Medicine. He pioneered the investigation what he named the “conditioned reflex.” In the experiment which made him famous, he trained a hungry dog to associate the sound of a bell with receiving food. Thereafter, the dog would salivate on hearing the bell alone. This work began as merely a study in digestion, with a series of experiments on dogs to investigate how digestive secretions are regulated. He identified three stimuli that caused dogs to begin to salivate: seeing, smelling, or tasting food. He realized, digestion is partly controlled by sensory stimuli. In 1903, Pavlov published his results on this learned— “conditioned reflex,” (as opposed to an innate reflex, like a reaction to pain). He worked actively in the lab until his death at age 87.«[DSB gives birth date as 27 Sep 1849. EB gives Old Style: 14 Sep 1849 (New Style: 26 Sep 1849).]
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