BRAIN TEASERS
Brain Teasers (page 393)

Brain Teasers (page 393)

puzzles, riddles, mathematical problems, word games, mastermind, cinemania, music, sport... These are the tasks listed 3921 to 3930.
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Calculate the number 510

NUMBERMANIA: Calculate the number 510 using numbers [1, 3, 9, 6, 75, 153] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 20
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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Find number abc

If 5b88b - a9aa0 = c555b find number abc. Multiple solutions may exist.
Correct answers: 44
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Guess the name of musician

Look carefully caricature and guess the name of musician.
Correct answers: 16
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #music

I had a joke about a...

“I had a joke about a cake, but it's stale.”

Jokes of the day - Daily updated jokes. New jokes every day.
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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 Djordje Timotijevic.
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#brainteasers #mastermind
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There are two incomplete wor...

There are two incomplete words. Place three (3) letters in bracket so that you can complete the word on the left and begin the word on the right.
Correct answers: 35
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #wordpuzzles
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With three eyes and a black ...

With three eyes and a black as night, I frequently knock down ten men with a single strike! What am I?
Correct answers: 45
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #riddles
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There are four three-digit n...

There are four three-digit numbers that share this property: the number itself, its double and its triple contain each digit from 1 to 9 exactly once. For example, 192 is one of them because 192, 384, 576 contain 1 to 9 each once. 273 is another one of them because 273, 546, 819 contain 1 to 9 each once. Can you find the other two numbers and calculate the product of these two numbers?
Correct answers: 23
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #riddles
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Chess Knight Move

Find the country and its capital city, using the move of a chess knight. First letter is M. Length of words in solution: 5,8.
Correct answers: 32
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #wordpuzzles #chessknightmove
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Calculate the number 1134

NUMBERMANIA: Calculate the number 1134 using numbers [4, 3, 4, 9, 99, 480] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 18
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math #numbermania
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What number comes next?

Look at the series (7, 14, 42, 168, 840, ?), determine the pattern, and find the value of the next number!
Correct answers: 92
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math #riddles
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Regiomontanus

Born 6 Jun 1436; died 6 Jul 1476 at age 40.German astronomer and mathematician who was chiefly responsible for the revival and advancement of trigonometry in Europe. His book De triangulis omnimodis (1464) is a systematic account of methods for solving triangles. In Jan 1472 he made observations of a comet which were accurate enough to allow it to be identified with Halley's comet 210 years later (being three returns of the 70 year period comet). He also observed several eclipses of the Moon. His interest in the motion of the Moon led him to make the important observation that the method of lunar distances could be used to determine longitude at sea. However, instruments of the time lacked the necessary accuracy to use the method at sea.
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