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Monthly Archive - October 2025 (page 3)brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 21 to 30. |
Calculate the number 2448
. Each of the numbers can be used only once.','/archive/2025/10/10/numbermania-1760054701.png','/calculate-the-number-2448/8505'))
NUMBERMANIA: Calculate the number 2448 using numbers [1, 3, 8, 2, 24, 267] 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/2025/10/09/magic-square-1759968327.png','/MAGIC-SQUARE-Calculate-A-B-C/8504'))
The aim is to place the some numbers from the list (2, 5, 6, 8, 17, 18, 20, 35, 36, 38) 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
#brainteasers #math #magicsquare
Find number abc
)
If 692c0 + a4bbb = cb376b find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Once upon a time the governmen...
Once upon a time the government had a vast scrap yard in the middle of a desert. Congress said, "Someone may steal from it at night." So they created a night watchman position and hired a person for the job.
Then Congress said, "How does the watchman do his job without instruction?" So they created a planning department and hired two people, one person to write the instructions, and one person to do time studies.
Then Congress said, "How will we know the night watchman is doing the tasks correctly?" So they created a Quality Control department and hired two people. One to do the studies and one to write the reports.
Then Congress said, "How are these people going to get paid?" So they created the following positions, a time keeper, and a payroll officer,then hired two people.
Then Congress said, "Who will be accountable for all of these people?" So they created an administrative section and hired three people, an Administrative Officer, Assistant Administrative Officer, and a Legal Secretary.
Then Congress said, "We have had this operating for one year and we are $18,000 over budget. We must cutback overall cost."
So they laid off the night watchman.
Then Congress said, "How does the watchman do his job without instruction?" So they created a planning department and hired two people, one person to write the instructions, and one person to do time studies.
Then Congress said, "How will we know the night watchman is doing the tasks correctly?" So they created a Quality Control department and hired two people. One to do the studies and one to write the reports.
Then Congress said, "How are these people going to get paid?" So they created the following positions, a time keeper, and a payroll officer,then hired two people.
Then Congress said, "Who will be accountable for all of these people?" So they created an administrative section and hired three people, an Administrative Officer, Assistant Administrative Officer, and a Legal Secretary.
Then Congress said, "We have had this operating for one year and we are $18,000 over budget. We must cutback overall cost."
So they laid off the night watchman.
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/2025/10/07/mastermind-1759795501.png','/Find-the-right-combination/8502'))
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
#brainteasers #mastermind
Calculate the number 9167
. Each of the numbers can be used only once.','/archive/2025/10/06/numbermania-1759709101.png','/calculate-the-number-9167/8501'))
NUMBERMANIA: Calculate the number 9167 using numbers [3, 7, 9, 6, 41, 893] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Find number abc
)
If 9ab5c + 1018b = 10a5b7 find number abc. Multiple solutions may exist. Correct answers: 1
#brainteasers #math
Which is a winning combination of digits?
. 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/2025/10/04/mastermind-1759536301.png','/Which-is-a-winning-combination-of-digits/8499'))
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 6370
. Each of the numbers can be used only once.','/archive/2025/10/03/numbermania-1759449902.png','/calculate-the-number-6370/8498'))
NUMBERMANIA: Calculate the number 6370 using numbers [2, 8, 2, 6, 15, 812] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#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/2025/10/02/magic-square-1759363575.png','/MAGIC-SQUARE-Calculate-A-B-C/8497'))
The aim is to place the some numbers from the list (10, 11, 12, 20, 21, 22, 27, 32, 55, 56, 57, 72) 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
#brainteasers #math #magicsquare
Find number abc
)
If 5b95a - c005c = ab89b find number abc. Multiple solutions may exist. Correct answers: 0
#brainteasers #math
