Daily Brain Teasers for Saturday, 31 January 2026
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puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ... |
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.
#brainteasers #mastermind
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.
#brainteasers #math #numbermania
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.
#brainteasers #math #magicsquare
Find number abc
If cbcac + 5b671 = b8b74 find number abc. Multiple solutions may exist.
#brainteasers #math
End of OSCAR 1In 1962, OSCAR 1, the first Orbiting Satellite Carrying Amateur Radio burnt up in the Earth's atmosphere. Its orbit had decayed since its last transmission on 1 Jan 1962, having spent 312 orbits in 22 days signalling HI in Morse code for radio amateurs around the world to receive from space until its non-rechargeable battery failed. It was achieved by San Francisco Bay radio hams, most having experience working at electronics companies, who arranged for their 10-lb hand-built transmitter to be placed in orbit just above the Earth's atmosphere, carried piggyback on a rocket launched to deploy a military satellite on 12 Dec 1961. That day marked the 60th anniversary of Marconi's first transatlantic radio transmission. It was also little more than four years since Russia launched the Sputnik satellite on 31 Jan 1957.«[Image: OSCAR 1 satellite held by Frank Ginner, one of its builders.] |
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.
#brainteasers #mastermind
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.
#brainteasers #math #numbermania
Find number abc
If 8bcac + 260bb = b0ac84 find number abc. Multiple solutions may exist.
#brainteasers #math
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.
#brainteasers #mastermind
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.
#brainteasers #math #numbermania
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.
#brainteasers #math #magicsquare
