BRAIN TEASERS
Brain Teasers (page 89)

Brain Teasers (page 89)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 881 to 890.
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Find the right combination

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 1991

NUMBERMANIA: Calculate the number 1991 using numbers [4, 6, 6, 6, 74, 713] 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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Find number abc

If 6a5c1 + 2751b = 88ab5 find number abc. Multiple solutions may exist.
Correct answers: 0
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#brainteasers #math

Mobius strip

A Mobius strip walks into a bar crying. The bartender says: what's wrong buddy?
The Mobius strip replies:
Oh, where do I even begin
Jokes of the day - Daily updated jokes. New jokes every day.
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Find the right combination

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 1076

NUMBERMANIA: Calculate the number 1076 using numbers [2, 6, 4, 8, 30, 426] 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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MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (8, 11, 18, 23, 26, 33, 36, 39, 45, 46, 68, 86) 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 2a4bb - 1b7a3 = 106ac find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
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What a winning combination?

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: 2
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 3127

NUMBERMANIA: Calculate the number 3127 using numbers [8, 4, 3, 9, 94, 579] 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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Find number abc

If 478ca + acc5c = 789b4 find number abc. Multiple solutions may exist.
Correct answers: 0
CHECK ANSWER
#brainteasers #math
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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.
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Ian Stewart

Born 24 Sep 1945. English mathematician and author of manybookson mathematics for the lay reader, and others for academics or as textbooks. As a young teenager with a zeal for mathematics, he always read the “Mathematical Games” column in Scientific American. From this he not only expanded his knowledge of mathematics, but also acquired the skills needed to be an entertaining communicator. Now, he writes the “Mathematical Recreations” column in Scientific American. In his career at the University of Warwick, he is a professor of mathematics with special responsibility for public understanding of science. He gave the 1997 Royal Institute Christmas Lectures. On 8 Jun 2009, he was presented with the award at the Science Museum in London as the first recipient of the Christopher Zeeman medal for public engagement in mathematics.«
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