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The Most Difficult Tasks (page 20)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 191 to 200. |
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/2025/10/30/magic-square-1761782726.png','/MAGIC-SQUARE-Calculate-A-B-C/8524'))
The aim is to place the some numbers from the list (13, 15, 16, 18, 20, 23, 37, 39, 44, 61) 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
Calculate the number 9167
. Each of the numbers can be used only once.','/archive/2025/10/27/numbermania-1761523501.png','/calculate-the-number-9167/8521'))
NUMBERMANIA: Calculate the number 9167 using numbers [4, 3, 9, 7, 37, 881] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Find number abc
)
If c4bab + 4b5ca = a2aa8c find number abc. Multiple solutions may exist. Correct answers: 0
#brainteasers #math
Little Johnny attended a horse...
Little Johnny attended a horse auction with his father. He watched as his father moved from horse to horse, running his hands up and down the horse's legs and rump, and chest. After a few minutes, Johnny asked, "Dad, why are you doing that?"
His father replied, "Because when I'm buying horses, I have to make sure that they are healthy and in good shape before I buy."
Johnny, looking worried, said, "Dad, I think the UPS guy wants to buy Mom..."
His father replied, "Because when I'm buying horses, I have to make sure that they are healthy and in good shape before I buy."
Johnny, looking worried, said, "Dad, I think the UPS guy wants to buy Mom..."
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/2025/10/25/mastermind-1761350701.png','/Find-the-right-combination/8519'))
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
#brainteasers #mastermind
Calculate the number 1520
. Each of the numbers can be used only once.','/archive/2025/10/24/numbermania-1761264301.png','/calculate-the-number-1520/8518'))
NUMBERMANIA: Calculate the number 1520 using numbers [6, 9, 9, 7, 96, 634] 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/2025/10/23/magic-square-1761177944.png','/MAGIC-SQUARE-Calculate-A-B-C/8517'))
The aim is to place the some numbers from the list (9, 11, 13, 15, 17, 21, 45, 47, 53, 65, 77) 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 6ac53 + 6c7a6 = 12aa3b find number abc. Multiple solutions may exist. Correct answers: 0
#brainteasers #math
Calculate the number 1609
. Each of the numbers can be used only once.','/archive/2025/10/20/numbermania-1760918701.png','/calculate-the-number-1609/8515'))
NUMBERMANIA: Calculate the number 1609 using numbers [8, 4, 6, 1, 43, 789] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Find number abc
)
If 62a66 + a46cb = 13a42c find number abc. Multiple solutions may exist. Correct answers: 0
#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/2025/10/18/mastermind-1760745901.png','/What-a-winning-combination/8513'))
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
#brainteasers #mastermind
