BRAIN TEASERS
The Most Difficult Tasks (page 3)

The Most Difficult Tasks (page 3)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30.
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MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (9, 10, 11, 14, 15, 16, 42, 54, 55, 56, 79) 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 a606b + 8227b = 1c8cc8 find number abc. Multiple solutions may exist.
Correct answers: 0
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#brainteasers #math
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Calculate the number 898

NUMBERMANIA: Calculate the number 898 using numbers [1, 9, 9, 9, 76, 286] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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#brainteasers #math #numbermania

Duct Tape & Onwards

An old man is sitting on his porch when he sees a young boy walking down the street dragging something behind him. He calls out to the boy, "Hey son, what you got there?" to which the boy replies, "It's duct tape, I'm gonna go catch me some ducks." The old man laughs and he calls out, "You fool, you can't catch ducks with duct tape!" The little boy laughs and continues on his way, returning a few short hours later, and behind him, he is dragging 8 ducks, all wrapped up in the duct tape. The old man can't believe his eyes.

The next day, the old man is sitting on his porch again and along comes the little boy dragging something behind him. When the old man asks what he's got this time, the boy replies, "It's a spool of chicken wire, I'm going to catch some chickens in it." Well the old man begins to laugh quite hard, telling the boy, "You fool, you can't catch chickens with chicken wire." The boy laughs himself, and says back, "That's what you said about the duct tape," and he continues on his way, with the old man laughing like crazy. A few hours later the old man is surprised to see the boy coming back, and even more shocked to see that behind him he is dragging 10 chickens, all tangled up in the chicken wire, he can't believe his eyes again.

The next day, the old man is sitting there wondering what the little boy will be up to next, and sure enough he sees him coming down the street with something in his hand. He calls out to the boy, "Hey son, what you go there today?

" The boy responds, "It's a pussy willow." The man then replies, "Hang on son, I'll get my hat!"

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Find number abc

If 8cbb8 - 7ab22 = bcab find number abc. Multiple solutions may exist.
Correct answers: 0
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#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: 0
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#brainteasers #mastermind
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Calculate the number 758

NUMBERMANIA: Calculate the number 758 using numbers [3, 3, 9, 4, 88, 379] 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 (12, 14, 21, 28, 30, 37, 40, 53, 55, 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
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 8c3c0 - 33b88 = b78aa find number abc. Multiple solutions may exist.
Correct answers: 0
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: 0
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 5613

NUMBERMANIA: Calculate the number 5613 using numbers [6, 8, 8, 9, 60, 271] 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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Antonio de Ulloa

Died 5 Jul 1795 at age 79 (born 12 Jan 1716).Spanish scientist and naval officer who discovered the element platinum (atomic number 78). In 1735, the French and Spanish governments sent an scientific expedition to Peru and Equador to measure a degree of meridian at Quinto, close to the equator. Ulloa was one of the officers appointed to take charge of the expedition. In 1744, the ship on which he returned was captured by the British, and he was taken prisoner, though treated respectfully by the English naval officers for they "were not at war with the arts and sciences." The log of his voyage to Peru published in 1748 contains a description of platinum. He established the first museum of natural history and the first metallurgical laboratory in Spain, as well as the Cadiz observatory.
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