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The Most Difficult Tasks (page 68)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 671 to 680. |
Find number abc
)
If 77b05 - 6ba61 = 1bcaa find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Find the right combination
. 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.','/archive/2025/05/27/mastermind-1748304301.png','/Find-the-right-combination/8371'))
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
#brainteasers #mastermind
Calculate the number 9848
. Each of the numbers can be used only once.','/archive/2025/05/26/numbermania-1748217901.png','/calculate-the-number-9848/8370'))
NUMBERMANIA: Calculate the number 9848 using numbers [7, 8, 4, 9, 11, 887] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
For his final project in a sta...
For his final project in a statistics class, a student decided to conduct a survey. He chose to find out peoples' favorite pastimes.
The teacher required that he sample at least 100 people, so he started out his project visiting a fairly large apartment building near the university.
He knocked on the first door and a man answered.
"Sir, what is your name?" asked the student.
"John."
"Sir, I'm doing a school study and would like to know what is your favorite pastime?"
"Watching bubbles in the bath," came the reply.
He liked the esoterical answer and continued down the hall, until he came to the next door.
He asked again, "Sir, what is your name?"
"Jeff."
"Sir, Would you please tell me your favorite pastime?"
"Watching bubbles in a bath," was the answer.
Quite amused and confused, he went on to ask a good number of people in the building and all of them had the same pastime..."watching bubbles in a bath".
He left the building and walked across the street where there were several row houses, to continue the survey.
At the first house, he knocks and an attractive girl opens the door.
Our surveyor starts again - "What is your name?"
"Bubbles."
The teacher required that he sample at least 100 people, so he started out his project visiting a fairly large apartment building near the university.
He knocked on the first door and a man answered.
"Sir, what is your name?" asked the student.
"John."
"Sir, I'm doing a school study and would like to know what is your favorite pastime?"
"Watching bubbles in the bath," came the reply.
He liked the esoterical answer and continued down the hall, until he came to the next door.
He asked again, "Sir, what is your name?"
"Jeff."
"Sir, Would you please tell me your favorite pastime?"
"Watching bubbles in a bath," was the answer.
Quite amused and confused, he went on to ask a good number of people in the building and all of them had the same pastime..."watching bubbles in a bath".
He left the building and walked across the street where there were several row houses, to continue the survey.
At the first house, he knocks and an attractive girl opens the door.
Our surveyor starts again - "What is your name?"
"Bubbles."
Find number abc
)
If c5ba0 - 4ab4b = 23bca find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Calculate the number 4100
. Each of the numbers can be used only once.','/archive/2025/05/23/numbermania-1747958701.png','/calculate-the-number-4100/8367'))
NUMBERMANIA: Calculate the number 4100 using numbers [5, 6, 7, 9, 26, 609] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
MAGIC SQUARE: Calculate A-B-C
 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.','/archive/2025/05/22/magic-square-1747872326.png','/MAGIC-SQUARE-Calculate-A-B-C/8366'))
The aim is to place the some numbers from the list (20, 22, 24, 28, 30, 32, 52, 54, 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: 1
#brainteasers #math #magicsquare
Find number abc
)
If b64a3 + 647a6 = a6aacb find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
What a winning combination?
. 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.','/archive/2025/05/20/mastermind-1747699501.png','/What-a-winning-combination/8364'))
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
#brainteasers #mastermind
Calculate the number 679
. Each of the numbers can be used only once.','/archive/2025/05/19/numbermania-1747613101.png','/calculate-the-number-679/8363'))
NUMBERMANIA: Calculate the number 679 using numbers [1, 2, 7, 2, 76, 599] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 1
#brainteasers #math #numbermania
Find number abc
)
If 8caac + 26260 = 111b0c find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
