BRAIN TEASERS
Math

Math

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 1 to 10.
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Find number abc

If 8a18c + 80b3b = 1631a4 find number abc. Multiple solutions may exist.
Correct answers: 0
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Calculate the number 5109

NUMBERMANIA: Calculate the number 5109 using numbers [3, 5, 6, 1, 22, 533] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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Find number abc

If a887c + 9c229 = ba5b05 find number abc. Multiple solutions may exist.
Correct answers: 0
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An investment counselor decide...

An investment counselor decided to go out on her own. She was shrewd and diligent, so business kept coming in, and pretty soon she realized that she needed an in-house counsel. She began to interview young lawyers.
"As I'm sure you can understand," she started off with one of the first applicants, "in a business like this, our personal integrity must be beyond question." She leaned forward. "Mr. Peterson, are you an honest lawyer?"
"Honest?" replied the job prospect. "Let me tell you something about honest. Why, I'm so honest that my father lent me $15,000 for my education, and I paid back every penny the minute I tried my very first case."
"Impressive. And what sort of case was that?"
The lawyer squirmed in his seat and admitted, "He sued me for the money."
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Calculate the number 769

NUMBERMANIA: Calculate the number 769 using numbers [2, 9, 3, 6, 92, 119] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 0
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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 (1, 10, 14, 18, 19, 20, 23, 24, 27, 28, 55, 60, 96) 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: 0
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#brainteasers #math #magicsquare
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Find number abc

If 5bc00 + b26a6 = 151ba6 find number abc. Multiple solutions may exist.
Correct answers: 0
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#brainteasers #math
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Calculate the number 841

NUMBERMANIA: Calculate the number 841 using numbers [2, 1, 1, 7, 54, 903] 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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Find number abc

If 48bc2 - cc99a = babca find number abc. Multiple solutions may exist.
Correct answers: 1
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#brainteasers #math
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Calculate the number 4072

NUMBERMANIA: Calculate the number 4072 using numbers [9, 9, 5, 9, 80, 382] 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 (5, 6, 14, 27, 28, 36, 40, 41, 49, 79) 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: 0
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#brainteasers #math #magicsquare
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Edison Electric

In 1880, the Edison Electric Illuminating Company was incorporated for the purpose of providing electric light to New York City. It was capitalized with $1,000,000. The first central electric station in the U.S. was opened by this company on 4 Sep 1882 at 257 Pearl St. in lower Manhattan. It had one engine, capable of generating power for 800 light bulbs. Within 14 months, the service had 508 subscribers and 12,732 bulbs. The company was the prototype for other local illuminating companies that were established in the United States during the 1880s. Edison's earlier Electric Light Company was incorporated 15 Oct 1878 for the purpose of financing Edison's invention of the incandescent lamp.Image: Interior of the Pearl Street Central Station, ca. 1880s.
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