Daily Brain Teasers for Tuesday, 17 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 516
NUMBERMANIA: Calculate the number 516 using numbers [1, 9, 2, 4, 18, 254] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If aa8c9 + 60a0b = bb63a0 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
Vasily Vasilyevich DokuchayevBorn 17 Feb 1846; died 26 Oct 1903 at age 57.Russian geomorphologist, Vasily Vasilyevich Dokuchayev, pioneered the study of soil creation processes and their classification. Dokuchayev regarded the composition of soil as the product of the combined interaction of climate, bedrock, and organisms. Thus, he showed (1898) that different soils of different areas may result from similar bedrock material when climate is differs. In this way, he was beginning the recognition of biomes. He introduced (1883) the term chernozem for a type of rich black soil, rich in carbonates and humus, that occurs in the temperate latitudes of Russia. |
Calculate the number 2159
NUMBERMANIA: Calculate the number 2159 using numbers [5, 8, 4, 2, 27, 278] 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 (15, 16, 19, 32, 33, 36, 44, 69, 70, 73, 78) 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 b0a78 + 6ac66 = 110cbb 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 1603
NUMBERMANIA: Calculate the number 1603 using numbers [2, 9, 2, 4, 15, 254] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 9c8c9 + a8025 = ba590a find number abc. Multiple solutions may exist.
#brainteasers #math
