BRAIN TEASERS
Monthly Archive - November 2022

Monthly Archive - November 2022

brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10.
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Find number abc

If aa2ba - c87b1 = 550c find number abc. Multiple solutions may exist.
Correct answers: 4
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#brainteasers #math
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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.
Correct answers: 4
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 8967

NUMBERMANIA: Calculate the number 8967 using numbers [3, 5, 8, 7, 12, 808] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #numbermania

Bad Pop Rocks

Cassie was taking two of her grandsons on their very first train ride from Dayton, Ohio to Washington, DC.

A vendor came down the corridor selling Pop Rocks, something neither had ever seen before.

Cassie bought each one a bag.

The first one eagerly tore open the bag and popped one into his mouth just as the train went into a tunnel.

When the train emerged from the tunnel, he looked across to his brother and said: "I wouldn't eat that if I were you."

"Why not?" replied the curious brother

"I took one bite and went blind for half a minute."

Jokes of the day - Daily updated jokes. New jokes every day.
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Find number abc

If 3bb30 + 7abca = cca8aa find number abc. Multiple solutions may exist.
Correct answers: 2
CHECK ANSWER
#brainteasers #math
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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.
Correct answers: 1
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 5696

NUMBERMANIA: Calculate the number 5696 using numbers [5, 7, 9, 9, 23, 822] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
CHECK ANSWER
#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (7, 10, 11, 12, 14, 16, 52, 55, 57, 71) 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.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #magicsquare
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Find number abc

If 7b3bc + 5a306 = c336b7 find number abc. Multiple solutions may exist.
Correct answers: 2
CHECK ANSWER
#brainteasers #math
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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.
Correct answers: 2
CHECK ANSWER
#brainteasers #mastermind
[link]

Calculate the number 1047

NUMBERMANIA: Calculate the number 1047 using numbers [1, 7, 6, 5, 49, 994] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
CHECK ANSWER
#brainteasers #math #numbermania
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Ozone layer

In 1987, the "Montreal Protocol on Substances that Deplete the Ozone Layer" was signed, agreeing that the production and consumption of most compounds that deplete ozone in the stratosphere, such as chlorofluorocarbons (CFCs), were to be phased out by 2000. It was further adjusted and amended at subsequent Meeting of the Parties between 1990 and 1997. Because of their relatively high ozone depletion potential, several man-made compounds in addition to (CFCs), carbon tetrachloride, methyl chloroform, and halons were targeted first for phaseout. Now, the U.S. Clean Air Act, for example, bans the release of ozone-depleting refrigerants the during maintenance or disposal of air conditioners and other refrigeration equipment.
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