Daily Brain Teasers for Sunday, 28 December 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Find number abc
If baa21 + 13044 = c8aba 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
Calculate the number 993
NUMBERMANIA: Calculate the number 993 using numbers [5, 3, 5, 6, 73, 778] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Mobius strip
A Mobius strip walks into a bar crying. The bartender says: what's wrong buddy?
The Mobius strip replies:
Oh, where do I even begin
The Mobius strip replies:
Oh, where do I even begin
MAGIC SQUARE: Calculate A*B*C
The aim is to place the some numbers from the list (2, 6, 10, 15, 19, 22, 23, 28, 63, 67, 72, 85) 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
Elizabeth Jordan CarrIn 1981, the first American “test tube” baby conceived through in vitro fertilization was born on this morning, a 5-lb 12-oz girl, at Norfolk General Hospital. The term “in vitro” is Latin for “in glass,” because conception takes place in a laboratory dish. The U.S. procedure was performed by the Howard and Georgeanna Jones Institute for Reproductive Medicine, which now draws patients from around the world with its advanced and comprehensive treatment of reproductive disorders, male and female. In vitro fertilization was a medical breakthrough because it helped doctors overcome intractable problems with a woman's fallopian tubes or a man's sperm count. The world's first “test-tube” baby, Louise Brown, was born in England, on 25 Jul 1978. |
Find number abc
If 6b425 + aca99 = c40224 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 2085
NUMBERMANIA: Calculate the number 2085 using numbers [2, 6, 5, 6, 87, 790] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 76a67 - b5a62 = c1aa5 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
Calculate the number 5172
NUMBERMANIA: Calculate the number 5172 using numbers [1, 6, 4, 2, 45, 816] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
