BRAIN TEASERS
Monthly Archive - August 2021 (page 2)

Monthly Archive - August 2021 (page 2)

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 11 to 20.
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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: 26
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #mastermind
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Calculate the number 7539

NUMBERMANIA: Calculate the number 7539 using numbers [5, 8, 2, 1, 65, 913] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 8
The first user who solved this task is Nílton Corrêa de Sousa.
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, 4, 5, 7, 11, 14, 16, 18, 25) 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: 9
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #magicsquare

A lawyer was cross-examining t...

A lawyer was cross-examining the doctor about whether or not he had checked the pulse of the deceased before he signed the death certificate. "No," the doctor said. "I did not check his pulse." "And did you listen for a heartbeat?" asked the lawyer. "No I did not," the doctor said. "So," said the lawyer, "when you signed the death certificate, you had not taken steps to make sure he was dead." The doctor said, "Well, let me put it this way. The man's brain was in a jar on my desk but, for all I know, he could be out practicing law somewhere."
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Find number abc

If c09c3 - ba810 = 1a1a3 find number abc. Multiple solutions may exist.
Correct answers: 18
The first user who solved this task is Nasrin 24 T.
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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: 23
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 3462

NUMBERMANIA: Calculate the number 3462 using numbers [9, 4, 8, 5, 58, 668] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 7
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 5a0c2 - ab335 = 6b5b find number abc. Multiple solutions may exist.
Correct answers: 20
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math
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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: 21
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 601

NUMBERMANIA: Calculate the number 601 using numbers [1, 9, 5, 7, 82, 516] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 10
The first user who solved this task is Nasrin 24 T.
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, 3, 5, 7, 8, 10, 18, 19, 21, 28) 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: 8
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #math #magicsquare
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Andrey Andreyevich Markov

Died 20 Jul 1922 at age 66 (born 14 Jun 1856).Russian mathematician who helped to develop the theory of stochastic processes, especially those called Markov chains, sequences of random variables in which the future variable is determined by the present variable but is independent of the way in which the present state arose from its predecessors. (For example, the probability of winning at the game of Monopoly can be determined using Markov chains.) His work based on the study of the probability of mutually dependent events has been developed and widely applied to the biological and social sciences.
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