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The Most Difficult Tasks (page 7)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 61 to 70. |
Find number abc
)
If 9a1cc - b9aa9 = 5acbb 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/2026/06/09/mastermind-1780963502.png','/What-a-winning-combination/8741'))
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 1689
. Each of the numbers can be used only once.','/archive/2026/06/08/numbermania-1780877101.png','/calculate-the-number-1689/8740'))
NUMBERMANIA: Calculate the number 1689 using numbers [5, 3, 1, 1, 28, 559] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Only a Half Wit
Joe: "I've heard about your wit."
Moe: "Oh, that's nothing."
Joe: "Yeah, that's what I've heard."
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/2026/06/06/mastermind-1780704301.png','/Which-is-a-winning-combination-of-digits/8738'))
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 1346
. Each of the numbers can be used only once.','/archive/2026/06/05/numbermania-1780617901.png','/calculate-the-number-1346/8737'))
NUMBERMANIA: Calculate the number 1346 using numbers [1, 3, 8, 5, 91, 479] 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/2026/06/04/magic-square-1780531529.png','/MAGIC-SQUARE-Calculate-A-B-C/8736'))
The aim is to place the some numbers from the list (5, 6, 11, 13, 14, 19, 29, 31, 32, 37) 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 c708b - 78aa0 = 1886b find number abc. Multiple solutions may exist. Correct answers: 0
#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/2026/06/02/mastermind-1780358701.png','/Find-the-right-combination/8734'))
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 1421
. Each of the numbers can be used only once.','/archive/2026/06/01/numbermania-1780272301.png','/calculate-the-number-1421/8733'))
NUMBERMANIA: Calculate the number 1421 using numbers [9, 4, 1, 2, 74, 383] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Find number abc
)
If baacc + 2a311 = 122baa find number abc. Multiple solutions may exist. Correct answers: 0
#brainteasers #math
