BRAIN TEASERS

Daily Brain Teasers for Monday, 13 April 2026

Daily Brain Teasers for Monday, 13 April 2026 puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, stereograms, ...

Calculate the number 1265

NUMBERMANIA: Calculate the number 1265 using numbers [7, 1, 5, 6, 55, 947] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
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#brainteasers #math #numbermania

Find number abc

If 68cc8 + 4ab95 = ba85cc find number abc. Multiple solutions may exist.
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#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.
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#brainteasers #mastermind

International Airline


Acronyms for International Airlines
Italy
ALITALIA = Always Late In The Air, Late In Arrival
ALITALIA = Arrived Late In Turin, And Luggage In Australia


Britain
BOAC = Better on a camel


Belgium
SABENA = Such A Bloody Experience Never Again


Pakistan
PIA = Please, Inform Allah


Yugoslavia
JAT = Joke About Time


Pacific Western Airlines
PWA = Pray While Aloft
PWA = Please Wait Awhile Airlines


Trans World Airlines = Teeney Weeny Airlines.
Jokes of the day - Daily updated jokes. New jokes every day.

Calculate the number 6588

NUMBERMANIA: Calculate the number 6588 using numbers [4, 4, 8, 8, 46, 504] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
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#brainteasers #math #numbermania

Elwood Haynes

Died 13 Apr 1925 at age 67 (born 14 Oct 1857).American inventor who built one of the first successful gasoline-powered automobiles. In 1886, when natural gas was found in his hometown of Portland, Indiana, Haynes organized a company to supply it to the town. He devised a method to dehydrate the gas prior to its being pumped through the lines. Also in 1886, he invented a small vapor thermostat used on natural gas. In 1893, he purchased a gasoline engine and designed a "horseless carriage." When Haynes was searching for an alloy that would make a durable spark plug electrode, he invented stellite alloy, which invention is still contributing to society today. Harder than steel and resistant to corrosion, this metal now plays an important part in fabrication of aeronautical materials suitable for exploration of outer space.

MAGIC SQUARE: Calculate A+B*C

The aim is to place the some numbers from the list (2, 6, 8, 9, 17, 19, 20, 62, 64, 65) 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 4a18c - 1a3b3 = c98a9 find number abc. Multiple solutions may exist.
CHECK ANSWER
#brainteasers #math

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.
CHECK ANSWER
#brainteasers #mastermind

Calculate the number 7328

NUMBERMANIA: Calculate the number 7328 using numbers [5, 5, 3, 3, 98, 819] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
CHECK ANSWER
#brainteasers #math #numbermania

Find number abc

If 7b0a8 + 544ab = cb65a0 find number abc. Multiple solutions may exist.
CHECK ANSWER
#brainteasers #math

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.
CHECK ANSWER
#brainteasers #mastermind
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