Daily Brain Teasers for Sunday, 20 July 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If cb5ac + 733ab = 85a83 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 4278
NUMBERMANIA: Calculate the number 4278 using numbers [1, 2, 4, 9, 70, 730] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania

This an interactive joke, so h...
This an interactive joke, so have a piece of paper and pen handy.
A blonde woman walks into an auto parts store and the parts man asks how she is doing and what can he do for her. She replies, "Fine, I need a seven-ten cap for my car." The man asks," A seven-ten cap? Where does it go, I've never heard of such a thing?"
The blonde angrily replies, "It goes on top of the engine and don't think just because I'm blonde I don't know what I'm talking about!!" Perplexed,the parts man asks if she would draw him a picture and maybe help him out in figuring out what it is she needs.
Reader: Draw the number 710 in the middle of the paper and draw a circle around the whole number. Now turn the paper upside down.
A blonde woman walks into an auto parts store and the parts man asks how she is doing and what can he do for her. She replies, "Fine, I need a seven-ten cap for my car." The man asks," A seven-ten cap? Where does it go, I've never heard of such a thing?"
The blonde angrily replies, "It goes on top of the engine and don't think just because I'm blonde I don't know what I'm talking about!!" Perplexed,the parts man asks if she would draw him a picture and maybe help him out in figuring out what it is she needs.
Reader: Draw the number 710 in the middle of the paper and draw a circle around the whole number. Now turn the paper upside down.
MAGIC SQUARE: Calculate A*B+C
The aim is to place the some numbers from the list (7, 8, 17, 19, 26, 27, 36, 50, 65, 66, 75, 91) 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
Julius CohnheimBorn 20 Jul 1839; died 15 Aug 1884 at age 45. Julius Friedrich Cohnheim was a German pioneer of experimental pathology who helped determine the morbid changes that occur in animal tissue affected by inflammation, tuberculosis, and other disease states. He demonstrated that inflammation was an active dynamic process. He was the first to scientifically classify tumors the way we still do today (ex. carcinomas, fibroma, sarcoma). Cohnheim proposed the first great theory of cancer's origin, the theory of embryonal rests. He thought more germ cells are produced with a developing embryo than are needed to form any given part and that cancer's development involves this excess material. |
Find number abc
If c6c8c + 9063a = a37aab find number abc. Multiple solutions may exist.
#brainteasers #math
What a winning 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
Calculate the number 473
NUMBERMANIA: Calculate the number 473 using numbers [2, 3, 1, 1, 10, 326] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 98242 - 9bacc = 18b5 find number abc. Multiple solutions may exist.
#brainteasers #math
What a winning 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
Calculate the number 7453
NUMBERMANIA: Calculate the number 7453 using numbers [1, 9, 9, 1, 22, 744] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania