Daily Brain Teasers for Tuesday, 30 November 2021
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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 2394
NUMBERMANIA: Calculate the number 2394 using numbers [8, 6, 1, 8, 84, 265] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 731a4 - 70ab0 = 2ac4 find number abc. Multiple solutions may exist.
#brainteasers #math
An Israeli doctor says...
An Israeli doctor says: "Medicine in my country is so advanced that we can take a kidney out of one man, put it in another, and have him looking for work in 6 weeks." A British doctor says: "That is nothing; we can take a lung out of one person, put it in another, and have him looking for work in 4 weeks." A Canadian doctor says: "In my country, medicine is so advanced that we can take half a heart out of one person, put it in another, and have them both looking for work in 2 weeks." A Nigerian doctor, not to be outdone, says: "You guys are way behind...... We just took a man with NO brain, made him President, and now the whole country is looking for work.
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
Ernst Florens Friedrich ChladniBorn 30 Nov 1756; died 3 Apr 1827 at age 70.German physicist who is known as the “father of acoustics”for his mathematical investigations of sound waves. Chladni figures, seen when thin plates covered in sand at set in vibration, are complex patterns of vibration with nodal lines that remain stationary and retain sand. He demonstrated these to an audience of scientists in Paris in 1809. He measured the speed of sound in various gases by determining the pitch of the note of an organ pipe filled with different gases. To determine the speed of sound in solids, Chladni used analysis of the nodal pattern in standing-wave vibrations in long rods. He performed on the euphonium, an instrument he invented, made of glass and steel bars vibrated by rubbing with a moistened finger. He also investigated meteorites. |
Calculate the number 8638
NUMBERMANIA: Calculate the number 8638 using numbers [7, 3, 7, 5, 99, 815] 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 (4, 5, 12, 13, 14, 17, 21, 31, 32, 39) 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 9b80a - 90ac7 = bbbb 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 4485
NUMBERMANIA: Calculate the number 4485 using numbers [4, 6, 1, 7, 73, 796] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
#brainteasers #math #numbermania
Find number abc
If 5cb0b - 2b1ba = 2561a find number abc. Multiple solutions may exist.
#brainteasers #math
