Daily Brain Teasers for Saturday, 28 February 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
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
Calculate the number 7832
NUMBERMANIA: Calculate the number 7832 using numbers [1, 6, 7, 4, 35, 749] 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, 14, 15, 16, 25, 26, 27, 68, 71, 72, 73) 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
Solitaire
Two lunatics are in the rec room of an asylum. One is playing solitaire, and the other is watching. Suddenly, the watcher says, "Hey! You just cheated yourself!"
"Ssh!" The other whispers, "Don't tell anybody, but I've been cheating myself at solitaire for years."
The first nut whispers back, "But, don't you ever catch yourself?"
"Nope", the solitaire player say proudly, "I'm way too clever!"
"Ssh!" The other whispers, "Don't tell anybody, but I've been cheating myself at solitaire for years."
The first nut whispers back, "But, don't you ever catch yourself?"
"Nope", the solitaire player say proudly, "I'm way too clever!"
Find number abc
If 1b1a0 + 21b02 = acca2 find number abc. Multiple solutions may exist.
#brainteasers #math
Sir Peter B. MedawarBorn 28 Feb 1915; died 2 Oct 1987 at age 72. Sir Peter Brian Medawar was an English immunologist and author whoshared, with Sir Frank Burnet, the 1960 Nobel Prize in Physiology or Medicine for their discovery of acquired immunological tolerance, which enabled organ and tissue transplantation. Medawar inoculated the embryos of mice, before they had developed the ability to form antibodies, with tissue cells from another strain. Subsequently, the “foreign” proteins were accepted, even when later the capability to form antibodies existed. Skin grafts from the second strain were then accepted by the inoculated mice. |
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 1691
NUMBERMANIA: Calculate the number 1691 using numbers [3, 9, 6, 6, 73, 845] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 34acc + ba42a = 52b2a 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 1762
NUMBERMANIA: Calculate the number 1762 using numbers [7, 1, 9, 3, 46, 223] 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 (1, 5, 10, 11, 15, 18, 19, 23, 49, 50, 54) 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
