Daily Brain Teasers for Friday, 26 April 2024
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 4235
NUMBERMANIA: Calculate the number 4235 using numbers [3, 1, 1, 4, 78, 981] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
MAGIC SQUARE: Calculate A+B-C
The aim is to place the some numbers from the list (3, 4, 7, 11, 12, 14, 18, 19, 29, 69, 70, 80) 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.
Find number abc
If 101a2 + 6cbcc = 7c7a1 find number abc. Multiple solutions may exist.
Grandma
The family wheeled Grandma out on the lawn, in her wheelchair, where the activities for her 100th birthday were taking place. Grandma couldn't speak very well, but she could write notes when she needed to communicate.
After a short time out on the lawn, Grandma started leaning off to the right, so some family members grabbed her straightened her up, and stuffed pillows on her right. A short time later, she started leaning off to her left, so again the family grabbed her and stuffed pillows on her left.
Soon she started leaning forward, so the family members again grabbed her, then tied a pillowcase around her waist to hold her up. A grandson, who arrived late, came up to Grandma and said, "Hi, Grandma, you're looking good! How are they treating you?"
Grandma took out her little notepad and slowly wrote a note to the grandson...
"They won't let me fart."
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.
Carl BoschDied 26 Apr 1940 at age 65 (born 27 Aug 1874). German industrial chemist who at BASF directed development of the industrial scale process for production of ammonia from atmospheric nitrogen. In 1908, Fritz Haber, a professor of chemistry had suggested that nitrogen and hydrogen gases could be combined using high temperatures, high pressure and catalysts that resulted in the Haber-Bosch process. By 1910, Alwin Mittasch (1869-1953), head chemist of the BASF ammonia research laboratory identified activated iron as a suitable catalyst. Bosch supervised creation of new technical solutions for high pressure operations. He shared (with Friedrich Bergius) the 1931 Nobel Prize for Chemistry for devising chemical high-pressure methods.« |
Calculate the number 372
NUMBERMANIA: Calculate the number 372 using numbers [1, 4, 7, 4, 37, 121] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If 4c787 + 39438 = 8cbba find number abc. Multiple solutions may exist.
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.
Calculate the number 760
NUMBERMANIA: Calculate the number 760 using numbers [5, 5, 8, 2, 19, 127] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
MAGIC SQUARE: Calculate A-B*C
The aim is to place the some numbers from the list (3, 4, 7, 12, 13, 15, 16, 42, 43, 46) 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.
Find number abc
If 52aca - 212ba = c15cb find number abc. Multiple solutions may exist.
