BRAIN TEASERS
The Most Difficult Tasks (page 85)

The Most Difficult Tasks (page 85)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 841 to 850.
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Calculate the number 8207

NUMBERMANIA: Calculate the number 8207 using numbers [5, 9, 7, 3, 23, 919] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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Find number abc

If 3c5ab + b292b = c7c22 find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 773

NUMBERMANIA: Calculate the number 773 using numbers [7, 2, 2, 6, 77, 937] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania

Mum's operation

Two women were bemoaning the state of the Health Service. One said, "Do you know, my ninety-three-year-old mother has been waiting over a year for her operation?"
"That's appalling," said the other woman. "What a terrible way to treat someone of that age."

"I know," said the first woman. "It got so bad that at one point I even said to her, 'Mum, do you really need bigger b**bs?'"

C/o Roland via 'Tradezone' junk mail in the smoko room.

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Calculate the number 246

NUMBERMANIA: Calculate the number 246 using numbers [1, 6, 7, 9, 66, 170] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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Which is a winning combination of digits?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 1
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2496

NUMBERMANIA: Calculate the number 2496 using numbers [1, 5, 5, 1, 54, 363] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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#brainteasers #math #numbermania
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Find number abc

If aaccb - 1ba77 = 1c072 find number abc. Multiple solutions may exist.
Correct answers: 1
CHECK ANSWER
#brainteasers #math
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Which is a winning combination of digits?

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 1
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 2421

NUMBERMANIA: Calculate the number 2421 using numbers [2, 7, 9, 8, 97, 785] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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 (2, 5, 7, 11, 14, 16, 46, 49, 51, 65, 80) 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: 1
CHECK ANSWER
#brainteasers #math #magicsquare
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Martha Wollstein

Died 30 Sep 1939 at age 70 (born 21 Nov 1868).American physician and pediatric pathologist. Her first experimental work involved infant diarrhea and confirmed earlier studies relating the dysentery bacillus to the disease. At the Rockefeller Institute of Medical Research, she collaborated on the first experimental work on polio in the U.S., worked on an early investigation of pneumonia and developed, with Harold Amoss, a method for preparing antimeningitis serum. She also pioneered in early research on mumps, indicating, though not proving, its viral nature. After 1921, Wollstein investigated pediatric pathology at the Babies Hospital, especially jaundice, congenital anomalies, tuberculosis, meningitis, and leukemia. In 1930, she was the first female member of the American Pediatric Society.
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