Daily Brain Teasers for Thursday, 30 October 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 (13, 15, 16, 18, 20, 23, 37, 39, 44, 61) 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 2baa4 + c992c = 10ba11 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.
Earning His Stripes
A young reporter went to a retirement home to interview an aged but legendary explorer. The reporter asked the old man to tell him the most frightening experience he had ever had. The old explorer looked into the distance and warmed to his task.
“Once, I was hunting Bengal tigers in the jungles of India,” he began: “I was on a narrow path and my faithful native gun bearer was behind me. Suddenly, the largest tiger I’ve ever seen in my life leaped onto the path in front of us. I turned to get my weapon only to find my gun bearer had fled. The tiger leaped toward me with a mighty ROARRRR! I soiled myself."
“Under those circumstances, sir, I think anyone would have done the same," the reporter said.
The old explorer replied: "No, not then -– just now when I went 'ROARRRR!'”
Calculate the number 9167
NUMBERMANIA: Calculate the number 9167 using numbers [4, 3, 9, 7, 37, 881] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Clifford GeertzDied 30 Oct 2006 at age 80 (born 23 Aug 1926). American cultural anthropologist, a leading rhetorician and proponent of symbolic anthropology and interpretive anthropology. |
Find number abc
If c4bab + 4b5ca = a2aa8c 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 1520
NUMBERMANIA: Calculate the number 1520 using numbers [6, 9, 9, 7, 96, 634] 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 (9, 11, 13, 15, 17, 21, 45, 47, 53, 65, 77) 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 6ac53 + 6c7a6 = 12aa3b find number abc. Multiple solutions may exist.
Calculate the number 1609
NUMBERMANIA: Calculate the number 1609 using numbers [8, 4, 6, 1, 43, 789] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
