BRAIN TEASERS
Brain Teasers (page 270)

Brain Teasers (page 270)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 2691 to 2700.
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Calculate the number 2725

NUMBERMANIA: Calculate the number 2725 using numbers [7, 9, 3, 5, 18, 312] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
The first user who solved this task is Fazil Hashim.
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#brainteasers #math #numbermania
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Find number abc

If c79c3 - baabb = 9bbc find number abc. Multiple solutions may exist.
Correct answers: 30
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math
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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.
Correct answers: 27
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #mastermind

Ten Witch Jokes for Halloween

Q) Why do witches wear name tags?
A) So they will know which witch is which.

Q) What do you call two witches sharing an apartment?
A) Broom-mates

Q) What is a little witch's favorite subject in school?
A) Spell-ing

Q) How does a witch tell time?
A) She looks at her witch-watch.

Q) Why did the witch give up fortune telling?
A) Because there was no future in it.

Q) What is the difference between a witch and the letters "M, A, K, E, S?"
A) One makes spells and the other spells "makes."

Q) What did the witch serve her friends who dropped in at dinner time?
A) Potluck

Q) How do you make a witch itch?
A) Take away the "w."

Q) Why is a witch's face like a million dollars?
A) It's green and wrinkly.

Q) What do witches use on their hair?
A) Scare spray.

Jokes of the day - Daily updated jokes. New jokes every day.
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Calculate the number 695

NUMBERMANIA: Calculate the number 695 using numbers [1, 7, 7, 3, 45, 647] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 19
The first user who solved this task is Nílton Corrêa de Sousa.
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#brainteasers #math #numbermania
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MAGIC SQUARE: Calculate A*B-C

The aim is to place the some numbers from the list (10, 12, 13, 14, 15, 17, 32, 33, 35, 37, 74, 92) 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: 14
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #magicsquare
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Find number abc

If c7aac + 913a3 = 1b8cb8 find number abc. Multiple solutions may exist.
Correct answers: 33
The first user who solved this task is Nasrin 24 T.
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#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: 28
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #mastermind
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Calculate the number 3112

NUMBERMANIA: Calculate the number 3112 using numbers [8, 7, 6, 6, 60, 402] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 13
The first user who solved this task is Nílton Corrêa de Sousa.
CHECK ANSWER
#brainteasers #math #numbermania
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Find number abc

If 759ab - cc620 = ababb find number abc. Multiple solutions may exist.
Correct answers: 27
The first user who solved this task is Nílton Corrêa de Sousa.
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: 22
The first user who solved this task is Nasrin 24 T.
CHECK ANSWER
#brainteasers #mastermind
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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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First telephone twang

In 1875, Alexander Bell and his assistant Thomas Watson had been working on the "harmonic telegraph". In the transmitter room, Watson had been trying to free a reed that had been too tightly wound to the pole of its electromagnet, when it produced a twang. Bell, who had been working in the receiving room heard the twang. He realized that now his dream of speech transmission must be a possibility, for the complex overtones and timbre of the twang he had just heard had a lot in common with the sound of the human voice. The next day, they continued tinkering on their experiment, anxious to achieve more ambitious results.[Image: diagram of earlier device under test in Winter 1873]
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