BRAIN TEASERS
The Easiest Tasks (page 332)

The Easiest Tasks (page 332)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 3311 to 3320.
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Find the area of the blue re...

Find the area of the blue region accurate up to 3 decimal places. (A=?, a=1732)
Correct answers: 31
The first user who solved this task is Erkain Mahajanian.
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#brainteasers #math #riddles
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Calculate the number 7490

NUMBERMANIA: Calculate the number 7490 using numbers [4, 8, 6, 5, 47, 946] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 31
The first user who solved this task is Adman72 Rocks.
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#brainteasers #math #numbermania
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Calculate AxBxC

Look at the series (4, 6, 12, 18, 30, 42, 60, 72, 102, 108, A, B, C), determine the pattern, and calculate AxBxC.
Correct answers: 31
The first user who solved this task is Donya Sayah30.
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#brainteasers #math

Guy's sitting on the couch...

Guy's sitting on the couch. From the kitchen he hears, "Babe.... can you help me?"

He goes to the kitchen. "What are you doing?"

She says, "I'm trying to do this jigsaw puzzle."

"What's it supposed to be?" he asks.

She picks up the box. "A Rooster."

"Honey," he says. "Let's put the cornflakes back in the box....."

Jokes of the day - Daily updated jokes. New jokes every day.
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PALINDROME

Make the palindrome of the following letters: D, D, E, E, M, M, N, N, O, O, O, O, P, P, R, R, R, R, S, S, S, S, T, T, T, T, U, U, U, U
Correct answers: 31
The first user who solved this task is Roxana zavari.
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#brainteasers #wordpuzzles #palindrome
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Find a famous person

Find the first and the last name of a famous person. Text may go in all 8 directions. Length of words in solution: 4,7.
Correct answers: 31
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #wordpuzzles
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Who is the mysterious person i...

Who is the mysterious person in the picture?
Correct answers: 31
The first user who solved this task is Donya Sayah30.
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#brainteasers #riddles
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Look carefully the picture a...

Look carefully the picture and guess the game name.
Correct answers: 31
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #games
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MAGIC SQUARE: Calculate A*B+C

The aim is to place the some numbers from the list (4, 5, 7, 21, 22, 24, 32, 33, 35, 49, 62, 84) 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: 31
The first user who solved this task is Roxana zavari.
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#brainteasers #math #magicsquare
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CINEMANIA: Guess the movie title

See negative of movie scene and guess the title. Length of words in solution: 4,4,1,4,2,3,4
Correct answers: 31
The first user who solved this task is Roxana zavari.
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#brainteasers #movie #film #cinemania
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Calculate the number 5041

NUMBERMANIA: Calculate the number 5041 using numbers [3, 5, 2, 3, 81, 600] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 31
The first user who solved this task is Erkain Mahajanian.
CHECK ANSWER
#brainteasers #math #numbermania
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William Hume-Rothery

Died 27 Sep 1968 at age 69 (born 15 May 1899).British metallurgist, internationally known for his work on the formation of alloys and intermetallic compounds. During WW II, he supervised many government contracts for work on complex aluminium and magnesium alloys. He established that the microstructure of an alloy depends on the different sizes of the component atoms, the valency electron concentration, and electrochemical differences. Hume-Rothery rules are an empirical guide to when two metals are sufficiently similar to be completely miscible (form a single phase at all relative concentrations). They are: (1). Atomic radii no more than about 15% different. (2). Pure metals have the same crystal structure. (3). Atoms have similar electronegativities. (4). Atoms have the same valence.
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