Daily Brain Teasers for Thursday, 13 August 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
MAGIC SQUARE: Calculate A-B-C
The aim is to place the some numbers from the list (21, 22, 26, 29, 30, 34, 36, 37, 41, 48, 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.
#brainteasers #math #magicsquare
Find number abc
If 5a1c1 - 41bac = 15c1b find number abc. Multiple solutions may exist.
#brainteasers #math
Find the right combination
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.
#brainteasers #mastermind
A Golfer's Deal With the Devil
A golfer was having a tough day and in his frustration he blurted out, "I would give anything for a birdie on this hole." A nearby stranger walked out of the woods beside the hole and whispered, "If you give up one quarter of your sex life, I guarantee you will make this shot."The golfer said "OK." He made the shot for birdie.A few holes later, he was having trouble on another hole. "Please, let me make this for eagle" he said.Again, the stranger stepped up to him and said, "If you give up another quarter of your sex life, you will make eagle.""You're on," the golfer said, and made the shot for eagle.On the eighteenth hole, the golfer needed an eagle to win. The stranger again stepped up and said "If you give up the last half of your sex life, you will make eagle to win.""OK," the golfer said, and made his shot for eagle, winning the round.As he was walking back to the clubhouse, the stranger walked up beside him and said, "I think I should inform you that I am the Devil, and from now on you will have no sex life."The golfer turned to him, smiled, and said, "Nice to meet you, my name is Father O'Malley!"
Calculate the number 3235
NUMBERMANIA: Calculate the number 3235 using numbers [2, 5, 9, 6, 27, 564] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
First stainless steel castIn 1913, the first true stainless steel was cast in Sheffield, England. It was a steel alloy that contained 0.24% carbon and 12.8% chromium. English metallurgist, Harry Brearley was developing a more erosion-resistant steel for rifle barrels. In order to examine the grain structure of the steel he needed to etch samples with acid before examining them under the microscope. The etching reagents he used were based on nitric acid, and he found that this new steel strongly resisted chemical attack. He then exposed samples to vinegar and other food acids such as lemon juice and found the same result. Brearley realized that this new steel could also revolutionise the cutlery industry. |
Find number abc
If 33aa9 + 2cbc3 = 554b2 find number abc. Multiple solutions may exist.
#brainteasers #math
Which is a winning combination of digits?
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.
#brainteasers #mastermind
Calculate the number 2291
NUMBERMANIA: Calculate the number 2291 using numbers [5, 7, 6, 5, 90, 345] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
MAGIC SQUARE: Calculate A*B+C
The aim is to place the some numbers from the list (20, 21, 23, 25, 30, 31, 35, 65, 66, 70) 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.
#brainteasers #math #magicsquare
Find number abc
If 880c7 - bb71a = 5cbb5 find number abc. Multiple solutions may exist.
#brainteasers #math
Find the right combination
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.
#brainteasers #mastermind
