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The Most Difficult Tasks (page 4)puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 31 to 40. |
Calculate the number 2473
. Each of the numbers can be used only once.','/archive/2026/07/13/numbermania-1783901101.png','/calculate-the-number-2473/8773'))
NUMBERMANIA: Calculate the number 2473 using numbers [7, 6, 5, 4, 29, 960] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Find number abc
)
If 8cb7b - b1cac = a1a4a find number abc. Multiple solutions may exist. Correct answers: 0
#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/2026/07/11/mastermind-1783728301.png','/Which-is-a-winning-combination-of-digits/8771'))
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
First day at school
The child comes home from his first day at school.
His Mother asks, "Well, what did you learn today?"
The kid replies, "Not enough. They want me to come back tomorrow."
Calculate the number 3015
. Each of the numbers can be used only once.','/archive/2026/07/10/numbermania-1783641901.png','/calculate-the-number-3015/8770'))
NUMBERMANIA: Calculate the number 3015 using numbers [8, 9, 2, 7, 10, 317] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Find number abc
)
If b2b5a + aabc9 = 151307 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/2026/07/07/mastermind-1783382702.png','/What-a-winning-combination/8768'))
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 3990
. Each of the numbers can be used only once.','/archive/2026/07/06/numbermania-1783296301.png','/calculate-the-number-3990/8767'))
NUMBERMANIA: Calculate the number 3990 using numbers [2, 7, 7, 2, 95, 423] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Correct answers: 0
#brainteasers #math #numbermania
Find number abc
)
If c1624 + 1b6b4 = 10c2ca find number abc. Multiple solutions may exist. Correct answers: 0
#brainteasers #math
Calculate the number 584
. Each of the numbers can be used only once.','/archive/2026/07/03/numbermania-1783037101.png','/calculate-the-number-584/8764'))
NUMBERMANIA: Calculate the number 584 using numbers [8, 2, 7, 2, 37, 316] 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/2026/07/02/magic-square-1782950772.png','/MAGIC-SQUARE-Calculate-A-B-C/8763'))
The aim is to place the some numbers from the list (3, 10, 11, 14, 18, 19, 22, 34, 35, 38, 76, 95) 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
