BRAIN TEASERS
Math (page 241)

Math (page 241)

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 2401 to 2410.
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Find number abc

If a1ab5 - 41560 = c0165 find number abc. Multiple solutions may exist.
Correct answers: 43
The first user who solved this task is Djordje Timotijevic.
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What number comes next?

Look at the series (13, 403, 122512, ?), determine the pattern, and find the value of the next number!
Correct answers: 54
The first user who solved this task is Fazil Hashim.
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Diophantus was a Greek mathe...

Diophantus was a Greek mathematician who lived in the third century. He was one of the first mathematicians to use algebraic symbols. Most of what is known about Diophantus's life comes from an algebraic riddle from around the early sixth century. The riddle states: Diophantus's youth lasted one sixth of his life. He grew a beard after one twelfth more. After one seventh more of his life, he married. 5 years later, he and his wife had a son. The son lived exactly one half as long as his father, and Diophantus died four years after his son. How many years did Diophantus live?
Correct answers: 38
The first user who solved this task is Fazil Hashim.
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#brainteasers #math #riddles

A man called to testify at the

A man called to testify at the Internal Revenue Service (IRS), asked his accountant for advice on what to wear.
"Wear your shabbiest clothing. Let him think you are a pauper," the accountant replied.
Then he asked his lawyer the same question, but got the opposite advice. "Do not let them intimidate you. Wear your most elegant suit and tie."
Confused, the man went to his Priest, told him of the conflicting advice, and requested some resolution of the dilemma."Let me tell you a story," replied the Priest.
"A woman, about to be married, asked her mother what to wear on her wedding night. 'Wear a heavy, long, flannel nightgown that goes right up to your neck.' But when she asked her best friend, she got conflicting advice. Wear your most sexy negligee, with a V neck right down to your navel."
The man protested: "What does all this have to do with my problem with the IRS?!"
"Simple", replied the Priest...
"It doesn't matter what you wear, you are going to get screwed!"
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Calculate the number 7787

NUMBERMANIA: Calculate the number 7787 using numbers [1, 3, 8, 3, 57, 954] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 19
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #numbermania
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Find number abc

If 6bacb + 92a6b = 16a126 find number abc. Multiple solutions may exist.
Correct answers: 37
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 1676

NUMBERMANIA: Calculate the number 1676 using numbers [2, 3, 5, 4, 19, 243] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 27
The first user who solved this task is Djordje Timotijevic.
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MAGIC SQUARE: Calculate A+B-C

The aim is to place the some numbers from the list (21, 25, 31, 33, 37, 43, 48, 55, 59, 65, 87) 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: 34
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math #magicsquare
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Find number abc

If 70aa1 - 540cb = 1ba55 find number abc. Multiple solutions may exist.
Correct answers: 53
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Calculate the number 8963

NUMBERMANIA: Calculate the number 8963 using numbers [2, 5, 9, 2, 18, 812] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 25
The first user who solved this task is Thinh Ddh.
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#brainteasers #math #numbermania
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Find number abc

If bc2cc - 1752a = 2177b find number abc. Multiple solutions may exist.
Correct answers: 48
The first user who solved this task is Djordje Timotijevic.
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#brainteasers #math
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Paul Bartsch

Born 14 Aug 1871; died 24 Apr 1960 at age 88. German-American zoologist who was an authority on molluscs, but had broad interests in natural history including plants and birds. He began his career as assistant curator of marine invertebrates at the US National Museum, Washington, DC., but then worked until retirement for the Smithsonian Institution (1896-1942). He represented that organisation on numerous zoological expeditions. In 1902, he initiated a systematic, scientific bird banding program (credited as the first in North America since John James Audubon) by banding 23 Black-crowned Night-herons at Washington, DC. During WW I, he invented a gas detector for the Chemical Warfare Service in 1918. Bartsch organized the first Boy Scout troop in Washington.«
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