Daily Brain Teasers for Friday, 22 August 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 960
NUMBERMANIA: Calculate the number 960 using numbers [6, 4, 3, 2, 17, 911] 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 (8, 10, 16, 18, 30, 32, 38, 39, 51, 53, 59, 64, 85) 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 cba91 + 13b91 = 9a1ba find number abc. Multiple solutions may exist.

Bee Inconspicuous
Two bees ran into each other. The first bee asked the other how things were going.
"Really bad," said the second bee. "The weather has been really wet and damp and there aren't any flowers or pollen, so I can't make any honey."
"No problem," said the first bee. "Just fly down five blocks and turn left. Keep going until you see all the cars. There's a Bar Mitzvah going on and there are all kinds of fresh flowers and fruit."
"Thanks for the tip," said the second bee, and he flew away.
A few hours later, the two bees ran into each other again. The first bee asked, "How'd it go?""Great!" said the second bee. "It was everything you said it would be."
"Uh, what's that thing on your head?" asked the first bee.
"That's my yarmulke," said the second bee. "I didn't want them to think I was a wasp."
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.
Laurence GouldBorn 22 Aug 1896; died 21 Jun 1995 at age 98.Laurence McKinley Gould was an American explorer and geologist who was the first geologist to reach the interior of the Antarctic continent. He travelled to the Queen Maud Mountains, making geological and glaciological surveys. This involved a 2½-month, 1,500-mile dog-sledge journey that left on 4 Nov 1929. In that month, his party climbed Mount Fridtjof Nansen. Gould found layers of sandstone outcrops at the mountain's peak that showed Antartica's geological links with other continents. Gould's name is on several features on the map of Antarctica. Earlier, in 1926 Gould travelled to the Arctic as an expedition geologist. He was second in command on Admiral Byrd's 1929 South Pole expedition.« |
Calculate the number 963
NUMBERMANIA: Calculate the number 963 using numbers [3, 8, 6, 8, 99, 136] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If cab78 - ba3b6 = b99cb find number abc. Multiple solutions may exist.
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.
Calculate the number 7299
NUMBERMANIA: Calculate the number 7299 using numbers [8, 3, 6, 6, 35, 645] 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 (7, 14, 17, 18, 27, 30, 31, 48, 51, 52) 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 ca903 + cab90 = b65093 find number abc. Multiple solutions may exist.