BRAIN TEASERS
The Most Difficult Tasks (page 187)

The Most Difficult Tasks (page 187)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1861 to 1870.
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MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (6, 7, 9, 20, 21, 23, 25, 26, 28, 75) 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: 11
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #magicsquare
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Calculate the number 1052

NUMBERMANIA: Calculate the number 1052 using numbers [7, 3, 3, 1, 16, 435] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania
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Guess the Game Name

Look carefully the picture and guess the game name.
Correct answers: 11
The first user who solved this task is Nasrin 24 T.
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#brainteasers #games

Mary's Little One

Mary had a little lamb...
And two nurses who passed out in the delivery room.

Jokes of the day - Daily updated jokes. New jokes every day.
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Calculate the number 3094

NUMBERMANIA: Calculate the number 3094 using numbers [9, 6, 2, 5, 70, 425] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Calculate the number 6077

NUMBERMANIA: Calculate the number 6077 using numbers [5, 8, 6, 9, 49, 434] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Fazil Hashim.
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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 (19, 20, 21, 27, 28, 29, 42, 64, 65, 66, 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: 11
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #magicsquare
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Calculate the number 1617

NUMBERMANIA: Calculate the number 1617 using numbers [7, 3, 7, 3, 22, 552] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Calculate the number 6679

NUMBERMANIA: Calculate the number 6679 using numbers [9, 1, 7, 1, 36, 665] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Calculate the number 2815

NUMBERMANIA: Calculate the number 2815 using numbers [1, 4, 4, 1, 27, 203] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Calculate the number 775

NUMBERMANIA: Calculate the number 775 using numbers [8, 2, 1, 1, 82, 355] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Aleksandr Mikhailovich Prokhorov

Born 11 Jul 1916; died 8 Jan 2002 at age 85.Aleksandr Mikhaylovich Prokhorov is the Soviet physicist who received, (with Nikolay G. Basov, USSR and Charles H. Townes, US), the Nobel Prize for Physics in 1964 "for fundamental work in the field of quantum electronics, which has led to the construction of oscillators and amplifiers based on the maser-laser principle." "Maser" stands for "microwave amplification by stimulated emission of radiation." An amplification can occur only if the stimulated emission is larger than the absorption, requiring that there should be more atoms in a high energy state than in a lower one. This state is called an inverted population. Prokhorov had researched the maser independently but simultaneously with the other prize recipients.
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