BRAIN TEASERS
Math (page 99)

Math (page 99)

These are fun math riddles. All of these tricky riddles are based on real math concepts and can be solved with purely math and logic. These are the tasks listed 981 to 990.
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MAGIC SQUARE: Calculate A*B*C

The aim is to place the some numbers from the list (4, 16, 17, 19, 22, 23, 25, 44, 45, 47, 50, 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: 2
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#brainteasers #math #magicsquare
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Find number abc

If ac9b8 - 4914b = 2aac8 find number abc. Multiple solutions may exist.
Correct answers: 2
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Calculate the number 9040

NUMBERMANIA: Calculate the number 9040 using numbers [1, 3, 9, 7, 53, 986] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania

It's raining out there!

A woman was having a daytime affair while her husband was at work. One rainy day she was in bed with her boyfriend when, to her horror, she heard her husband's car pull into the driveway.

'Oh my God - Hurry! Grab your clothes and jump out the window. My husband's home early!'

'I can't jump out the window. It's raining out there!'

'If my husband catches us in here, he'll kill us both!' she replied. 'He's got a hot temper and a gun, so the rain is the least of your problems!'

So the boyfriend scoots out of bed, grabs his clothes and jumps out the window! As he ran down the street in the pouring rain, he quickly discovered he had run right into the middle of the town's annual marathon, so he started running along beside the others, about 300 of them.

Being naked, with his clothes tucked under his arm, he tried to blend in as best he could. After a little while a small group of runners who had been watching him with some curiosity, jogged closer.

Do you always run in the nude?' one asked.

'Oh yes!' he replied, gasping in air. 'It feels so wonderfully free!'

Another runner moved a long side. 'Do you always run carrying your clothes with you under your arm?'

'Oh, yes' our friend answered breathlessly. 'That way I can get dressed right at the end of the run and get in my car to go home!'

Then a third runner cast his eyes a little lower and asked, 'Do you always wear a condom when you run?'

'Nope..just when it's raining.'

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Find number abc

If 88502 + bb0b8 = ca5580 find number abc. Multiple solutions may exist.
Correct answers: 4
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#brainteasers #math
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Calculate the number 1365

NUMBERMANIA: Calculate the number 1365 using numbers [7, 3, 5, 7, 55, 690] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
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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 (11, 14, 18, 27, 30, 34, 36, 65, 68, 72) 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: 2
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#brainteasers #math #magicsquare
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Find number abc

If a9a53 + 5acb1 = 103bca find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 2907

NUMBERMANIA: Calculate the number 2907 using numbers [7, 3, 7, 4, 12, 979] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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Find number abc

If 4bbaa - b8077 = ac045 find number abc. Multiple solutions may exist.
Correct answers: 4
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#brainteasers #math
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Calculate the number 1713

NUMBERMANIA: Calculate the number 1713 using numbers [6, 3, 4, 2, 54, 137] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
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#brainteasers #math #numbermania
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Enrico Betti

Died 11 Aug 1892 at age 68 (born 21 Oct 1823).Italian mathematician who is noted for his contributions to algebra and topology. His early work is in the area of equations and algebra. He wrote the first rigorous exposition of the theory of equations, previously given without proofs, developed by the noted French mathematician Évariste Galois (1811-32). Betti extended and gave proofs relating to the algebraic concepts of Galois, published in several works from 1851. Betti thus made an important contribution to the transition from classical to modern algebra. He was the first to give a proof that the Galois group is closed under multiplication. Betti also wrote a pioneering memoir on topology, the study of surfaces and space. Betti did important work in theoretical physics, in particular in potential theory and elasticity.
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