Daily Brain Teasers for Thursday, 25 September 2025
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
MAGIC SQUARE: Calculate A*B+C
The aim is to place the some numbers from the list (2, 3, 4, 25, 26, 27, 42, 43, 44) 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 56b5c - baba5 = 26a54 find number abc. Multiple solutions may exist.
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.
International Firefighters' Day jokes
International Firefighters' Day (IFFD) is observed on May 4. Check out some firefighters jokes.
What happened to the firefighter who wasn't doing well in his job?
He got fired!
Daddy, which letter firefighters hates the most?
R, son.
What do cops and firefighters have in common?
They both wanted to be firefighters.
Firefighters go to rescue a woman from an upper floor of a burning apartment building. The firefighters say look, we have two ways to get you out. We have this new technology that allows us to form a fireproof slide that can take you down the stairs. Or, you can just come out the window with us and go down the way we've always done it.
The lady says, "The former seems interesting, but I think I'll choose the ladder."
Working from home sucks...
....if you’re a firefighter.
Little Johnny's preschool class went on a field trip to the fire station.
The firefighter giving the presentation held up a smoke detector and asked the class:
"Does anyone know what this is?"
Little Johnny's hand shot up and the firefighter called on him.
Little Johnny replied: "That's how Mommy knows supper is ready!"
Firefighters recovered just the bottom of one shoe after the shoe factory burned down It was the sole survivor.
Calculate the number 7562
NUMBERMANIA: Calculate the number 7562 using numbers [7, 8, 5, 4, 15, 954] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Thomas Chrowder ChamberlinBorn 25 Sep 1843; died 15 Nov 1928 at age 85. American geologist known for his "planetesimal hypothesis". With Forest Ray Moulton in 1904, he proposed that the solar system formed after gas flares were ripped from the sun by the gravitational field of a passing star. The flares then condensed into "planetesimals," arrayed in a spiral extending from the sun, gradually accumulated material and became the planets we know today. From 1876, he was Wisconsin Geological Survey's chief geologist, moving to head the glacier division of the U.S. Geological Survey (1881). He was president of the University of Wisconsin (1887-92), and then for 26 years he was head of its geology department of the University of Chicago. He founded The Journal of Geology. |
Find number abc
If a0a1a + b99ca = 140ba4 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 4066
NUMBERMANIA: Calculate the number 4066 using numbers [8, 2, 1, 9, 63, 350] 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, 5, 6, 10, 12, 13, 18, 20, 21, 56, 66) 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 84c0b - a1b69 = 5c4a8 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.
