BRAIN TEASERS

Daily Brain Teasers for Friday, 23 January 2026

Daily Brain Teasers for Friday, 23 January 2026 puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ...

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.
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#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.
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#brainteasers #math #magicsquare

Find number abc

If c0490 - b8aab = 21a1a find number abc. Multiple solutions may exist.
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#brainteasers #math
Jokes of the day - Daily updated jokes. New jokes every day.

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.
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#brainteasers #mastermind

Gertrude B. Elion

Born 23 Jan 1918; died 21 Feb 1999 at age 81. Gertrude Belle Elion was an American pharmacologist who shared the Nobel Prize for Physiology or Medicine in 1988 (with George H. Hitchings and Sir James W. Black) for the development of drugs used to treat several major diseases. Research by Elion and Hitchings produced the first drugs specifically designed for cancer therapy, as well as drugs to combat rejection of transplanted organs, gout, malaria and bacterial and viral infections. These medications became well-proven in use over many years, and their drugs appeared on the World Health Organizations's list of so-called "Essential Drugs" as medicines which should be available worldwide to promote "Health for All." Elion held 45 patents.«

Calculate the number 3490

NUMBERMANIA: Calculate the number 3490 using numbers [1, 6, 9, 8, 42, 316] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
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#brainteasers #math #numbermania

Find number abc

If 97ccb - a5b79 = 7b8aa find number abc. Multiple solutions may exist.
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#brainteasers #math

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.
CHECK ANSWER
#brainteasers #mastermind

Calculate the number 3468

NUMBERMANIA: Calculate the number 3468 using numbers [9, 1, 8, 9, 21, 273] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
CHECK ANSWER
#brainteasers #math #numbermania

MAGIC SQUARE: Calculate A+B+C

The aim is to place the some numbers from the list (9, 10, 11, 15, 16, 17, 28, 29, 30, 74, 82) 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.
CHECK ANSWER
#brainteasers #math #magicsquare

Find number abc

If ba4ba + b614c = 495c0 find number abc. Multiple solutions may exist.
CHECK ANSWER
#brainteasers #math
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