Daily Brain Teasers for Friday, 26 September 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 319
NUMBERMANIA: Calculate the number 319 using numbers [6, 8, 3, 9, 44, 858] 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 (2, 3, 4, 25, 26, 27, 42, 43, 44) 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 56b5c - baba5 = 26a54 find number abc. Multiple solutions may exist.
#brainteasers #math
Two Sets of Tonsils?
A young man approached his family physician and said, "Doc, I'm afraid you'll have to remove my wife's tonsils one of these days."
"My good man," replied the doctor, "I removed them six years ago. Did you ever hear of a woman having two sets of tonsils?"
"No," the husband retorted, "but you've heard of a man having two wives, haven't you?"
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
First GB human blood transfusionIn 1818, the first transfusion in Great Britain using human blood (as opposed to animal blood) took place at Guy's Hospital, London, by Dr. James Blundell. The patient, Mr. Brazier, was beyond hope of recovery due to incurable scirrhous disease of the pyloric orifice of the stomach, but he was anxious that the procedure be tried. Using an instrument of his own design, the doctor transfused of between 12 to 14 ounces of donated human blood into a vein in the patient's arm. For 30 or 40 minutes there seemed benefit, as his pulse and body temperature increased. However, he died 56 hours after the treatment. Ten years later, Dr. Blundell saved a patient's life with a blood transfusion, but by then, Dr. Doubleday had already, in 1825, become the first to achieve a life-saving success.« |
Calculate the number 7562
NUMBERMANIA: Calculate the number 7562 using numbers [7, 8, 5, 4, 15, 954] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If a0a1a + b99ca = 140ba4 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 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
