BRAIN TEASERS
The Easiest Tasks (page 320)

The Easiest Tasks (page 320)

puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 3191 to 3200.
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MAGIC SQUARE: Calculate A-B-C

The aim is to place the some numbers from the list (8, 9, 12, 22, 23, 26, 49, 69, 70, 73) 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: 32
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #magicsquare
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Calculate the number 9372

NUMBERMANIA: Calculate the number 9372 using numbers [9, 8, 8, 4, 99, 453] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 32
The first user who solved this task is Djordje Timotijevic.
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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 (12, 14, 15, 24, 26, 27, 55, 56, 58, 59, 71, 97) 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: 32
The first user who solved this task is Roxana zavari.
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#brainteasers #math #magicsquare

What Are The Pictures?

A young lad was visiting a church for the first time, checking all the announcements and posters along the walls.
When he came to a group of pictures of men in uniform, he asked a nearby usher, "Who are all those men in the pictures?"
The usher replied, "Why, those are our boys who died in the service".
Dumbfounded, the youngster asked, "Was that the morning service or the evening service?"
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Calculate the number 1541

NUMBERMANIA: Calculate the number 1541 using numbers [2, 1, 3, 7, 23, 687] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 32
The first user who solved this task is Roxana zavari.
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#brainteasers #math #numbermania
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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: 3,5,4,9.
Correct answers: 32
The first user who solved this task is Roxana zavari.
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#brainteasers #wordpuzzles
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Calculate the number 2837

NUMBERMANIA: Calculate the number 2837 using numbers [9, 4, 3, 3, 43, 226] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 32
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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What is the area of my hexagon?

I have a hexagon, with six sides of equal length. Opposite pairs of sides are parallel, and the distances between these parallel sides are 7, 8 and 9. What is the area of my hexagon? Express result to the accuracy of 3 decimal.
Correct answers: 32
The first user who solved this task is Neelima Subrahmanyam.
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#brainteasers #math #riddles
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Look carefully the picture a...

Look carefully the picture and guess the game name.
Correct answers: 32
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #games
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Guess the Game Name

Look carefully the picture and guess the game name.
Correct answers: 32
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #games
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MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (16, 17, 19, 20, 25, 28, 60, 61, 62, 70) 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: 32
The first user who solved this task is Djordje Timotijevic.
CHECK ANSWER
#brainteasers #math #magicsquare
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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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