Daily Brain Teasers for Friday, 19 September 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 4066
NUMBERMANIA: Calculate the number 4066 using numbers [8, 2, 1, 9, 63, 350] 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 (3, 5, 6, 10, 12, 13, 18, 20, 21, 56, 66) 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 84c0b - a1b69 = 5c4a8 find number abc. Multiple solutions may exist.
#brainteasers #math
Passing An Exam
Three patients in a mental institution prepare for an examination given by the head psychiatrist. If the patients pass the exam, they will be free to leave the hospital. However, if they fail, the institution will detain them for five years.
The doctor takes the three patients to the top of a diving board looking over an empty swimming pool, and asks the first patient to jump.
The first patient jumps head first into the pool and breaks both arms.
Then the second patient jumps and breaks both legs.
The third patient looks over the side and refuses to jump. "Congratulations! You're a free man. Just tell me why didn't you jump?" asked the doctor.
To which the third patient answered, "Well Doc, I can't swim!"
The doctor takes the three patients to the top of a diving board looking over an empty swimming pool, and asks the first patient to jump.
The first patient jumps head first into the pool and breaks both arms.
Then the second patient jumps and breaks both legs.
The third patient looks over the side and refuses to jump. "Congratulations! You're a free man. Just tell me why didn't you jump?" asked the doctor.
To which the third patient answered, "Well Doc, I can't swim!"
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
C. G. SeligmanDied 19 Sep 1940 at age 66 (born 24 Dec 1873).C(harles) G(abriel) Seligman was a pioneer in British anthropology who conducted significant field research in Melanesia, Ceylon (now Sri Lanka), and, most importantly, the Nilotic Sudan. After his education as a physician he went with the Cambridge Anthropological Expedition to the Torres Straits (1898-9). Subsequently, his interests turned from medical research towards anthropology, and revisited New Guinea (1904) to distinguish the characteristic racial, cultural, and social traits of the peoples of the region. In the 1920's, he pioneered a psychoanalytic approach: studying cross-cultural similarity of dreams. He concluded that the psychology of the unconscious could provide an approach to some basic anthropological problems. |
Calculate the number 786
NUMBERMANIA: Calculate the number 786 using numbers [5, 1, 8, 1, 29, 588] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If abccc - b599b = 3ac5b 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 6662
NUMBERMANIA: Calculate the number 6662 using numbers [6, 8, 1, 4, 33, 934] 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 (6, 11, 12, 24, 29, 30, 35, 40, 41, 52) 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 67333 - b835b = a898c find number abc. Multiple solutions may exist.
#brainteasers #math
