BRAIN TEASERS
Math (page 155)

Math (page 155)

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 1541 to 1550.
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Find number abc

If a10a1 + 919ac = 1229b9 find number abc. Multiple solutions may exist.
Correct answers: 21
The first user who solved this task is Nasrin 24 T.
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Calculate the number 1050

NUMBERMANIA: Calculate the number 1050 using numbers [7, 2, 2, 2, 16, 486] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 11
The first user who solved this task is Nasrin 24 T.
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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 (2, 5, 7, 16, 19, 21, 34, 55, 58, 60) 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: 12
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #magicsquare

Hot Dog!

Two Scottish nuns have just arrived in USA by boat and one says to the other, "I hear that the people of this country actually eat dogs.

"Odd," her companion replies, "but if we shall live in America, we might as well do as the Americans do." Nodding emphatically, the mother superior points to a hot dog vendor and they both walk towards the cart.

"Two dogs, please," says one. The vendor is only too pleased to oblige and he wraps both hot dogs in foil and hands them over the counter. Excited, the nuns hurry over to a bench and begin to unwrap their 'dogs.'

The mother superior is first to open hers. She begins to blush and then, staring at it for a moment, leans over to the other nun and whispers cautiously, "What part did you get?"

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Find number abc

If a5a47 - b71bc = c8785 find number abc. Multiple solutions may exist.
Correct answers: 26
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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Calculate the number 5431

NUMBERMANIA: Calculate the number 5431 using numbers [2, 5, 4, 4, 82, 953] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 8
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math #numbermania
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Find number abc

If 1bc55 + 9a41b = 1b3a65 find number abc. Multiple solutions may exist.
Correct answers: 25
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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Calculate the number 1221

NUMBERMANIA: Calculate the number 1221 using numbers [4, 1, 8, 5, 29, 998] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 12
The first user who solved this task is Nasrin 24 T.
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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, 13, 19, 29, 30, 36, 47, 48, 54, 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: 10
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 464bc - 250a7 = 2bacb find number abc. Multiple solutions may exist.
Correct answers: 16
The first user who solved this task is Nasrin 24 T.
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#brainteasers #math
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Calculate the number 3216

NUMBERMANIA: Calculate the number 3216 using numbers [3, 5, 2, 4, 16, 982] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 8
The first user who solved this task is NĂ­lton CorrĂȘa de Sousa.
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#brainteasers #math #numbermania
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Edison phonograph

In 1877, Thomas Alva Edison, though this date is often given as the date of a finished model of his first phonograph, may have actually only made a sketch. Some correspondence in Sep 1877 suggests Edison was at work on his ideas for what became his cylinder phonograph, though construction of a working model may not have begun until 4 Dec, according to the diary of one of Edison's aides. Indeed, Edison did not file for the patent until 24 Dec 1877. The idea came to him while working on a telegraph transmitter, when he noticed that when the tape of the machine was played at high speed, it gave off a noise resembling spoken words. After experimenting with a needle attached to the diaphragm of a telephone receiver to prick paper tape to record a message, his idea evolved to using a stylus on a tinfoil cylinder.«[Image: Sketch dated 20 Nov 1877 given to machinist John Kruesi to make the world's first cylinder phonograph.]
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