Daily Brain Teasers for Friday, 30 January 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
Calculate the number 7003
NUMBERMANIA: Calculate the number 7003 using numbers [3, 8, 3, 4, 93, 791] 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, 5, 16, 17, 18, 60, 61, 62, 63, 79) 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 cbcac + 5b671 = b8b74 find number abc. Multiple solutions may exist.
What if...
Tom is applying for a job as a signalman for the local railroad and is told to meet the inspector at the signal box.
The inspector decides to give Tom a pop quiz, asking: "What would you do if you realized that two trains were heading towards each other on the same track?"
Tom says: "I would switch one train to another track."
"What if the lever broke?" asks the inspector.
"Then I'd run down to the tracks and use the manual lever down there," answers Tom.
"What if that had been struck by lightning?" challenges the inspector.
"Then," Tom continued, "I'd run back up here and use the phone to call the next signal box."
"What if the phone was busy?"
"In that case," Tom argued, "I'd run to the street level and use the public phone near the station."
"What if that had been vandalized?"
"Oh well," said Tom, "in that case I would run into town and get my Uncle Leo.
This puzzled the inspector, so he asked "Why would you do that?"
"Because he's never seen a train crash."
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.
Ferdinand PorscheDied 30 Jan 1951 at age 75 (born 3 Sep 1875).Austrian automotive engineer who designed the popular Volkswagen car. In 1900, as a young engineer and test driver, Porsche had devised the wheel hub motors on the Lohner-Porsche Electric Car exhibited at the Paris Exposition, making the name Porsche famous worldwide. In 1935, the brainchild of Adolph Hitler - the VW Beetle - was designed by Porsche. Hitler wanted a car built for the masses. By 1938 the first Beetle was completed - just before the outbreak of World War II. The car offered innovative technology, including an air-cooled motor, an atypical shape, no front grill and a rear motor. It was not until 1946 that the Volkswagen (which name means "people's car") went into series production. His son, Ferdinand, continued the business. |
Calculate the number 5876
NUMBERMANIA: Calculate the number 5876 using numbers [8, 3, 1, 8, 21, 519] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Find number abc
If 8bcac + 260bb = b0ac84 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 3716
NUMBERMANIA: Calculate the number 3716 using numbers [8, 1, 1, 3, 48, 397] 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, 22, 23, 25, 26, 29, 30, 39, 42, 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 c0490 - b8aab = 21a1a find number abc. Multiple solutions may exist.
