Daily Brain Teasers for Tuesday, 07 July 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
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 3990
NUMBERMANIA: Calculate the number 3990 using numbers [2, 7, 7, 2, 95, 423] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If c1624 + 1b6b4 = 10c2ca find number abc. Multiple solutions may exist.
#brainteasers #math
A husband and wife are moving...
A husband and wife are moving out of their house and are starting to box everything up. The husband finds a box under the bed, pulls it out, and looks inside, where he finds two eggs and about $8,000. He approaches the wife and asks, "What are the eggs for?" She replies, "Every time I cheat on you, I put an egg in the box." He says, "That's alright, you've only cheated on me twice. What's the money for?" The wife replies, "Every time I get a dozen, I sell them!"
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
Phillips-head screwIn 1936, several U.S. patents were issued for the Phillips-head screw and screwdriver to its inventor, Henry F. Phillips (Nos. 2,046,343, 2,046,837 -40). They describe a fastening system involving a shallow cruciform recess and a matching driver with a tapering tip that conveniently self-centers in the screw head. Phillips founded the Phillips Screw Company to license his patents. After three years of rejection, he finally persuaded the American Screw Company to spend $500,000 developing a manufacturing process and manufacture the screws. General Motors was convinced to use the screws on its 1936 Cadillac. By 1940 virtually every American automaker had switched to Phillips screws. |
Calculate the number 584
NUMBERMANIA: Calculate the number 584 using numbers [8, 2, 7, 2, 37, 316] 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, 10, 11, 14, 18, 19, 22, 34, 35, 38, 76, 95) 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 84b40 + 4c8ba = acb6aa 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 1520
NUMBERMANIA: Calculate the number 1520 using numbers [3, 4, 9, 1, 78, 182] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 699a9 - 5cc46 = b658c find number abc. Multiple solutions may exist.
#brainteasers #math
