Daily Brain Teasers for Tuesday, 09 December 2025
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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 1669
NUMBERMANIA: Calculate the number 1669 using numbers [3, 5, 9, 6, 39, 344] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 9c3bc - ccc0b = 19ab2 find number abc. Multiple solutions may exist.
#brainteasers #math
Body building Program
My wife just completed a 40 week body building program this morning.
It’s a girl and weighs 7 lbs 12 oz.
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
Carl Wilhelm ScheeleBorn 9 Dec 1742; died 21 May 1786 at age 43. (also Karl) Swedish chemist who discovered oxygen in 1772. Scheele, a keen experimenter, worked in difficult and often hazardous conditions. In his only book, Chemical Observations and Experiments on Air and Fire (1777), he stated that the atmosphere is composed of two gases, one supporting combustion, which he named "fire air" (oxygen), and the other preventing it, which he named "vitiated air" (nitrogen). Due to delay in his publication, he lost priority to Priestley's discovery of oxygen in 1774. Scheele discovered many substances, such as chlorine (1774), manganese (1774), tungsten (1781), molybdenum (1782), glycerol, hydrocyanic (prussic) acid, citric acid, hydrogen sulphide and hydrogen fluoride. He also discovered a process resembling pasteurization. |
Calculate the number 2178
NUMBERMANIA: Calculate the number 2178 using numbers [8, 3, 5, 5, 99, 970] 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 (5, 8, 10, 12, 18, 21, 23, 33, 36, 38, 83) 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 cb55c - a0c06 = bbbc8 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 3316
NUMBERMANIA: Calculate the number 3316 using numbers [9, 4, 7, 7, 45, 761] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If a02b4 + 477c0 = cb7a44 find number abc. Multiple solutions may exist.
#brainteasers #math
