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Solve Math Puzzle

If 7 + 3 = 410, 9 + 6 = 315, 2 + 1 = 13 then 5 + 4 = ?
The first user who solved this task is Roxana zavari.
#brainteasers #math #riddles

A gentleman is preparing to bo...

A gentleman is preparing to board a plane, when he hears that the Pope is on the same flight. “This is exciting,” thinks the gentleman. “Perhaps I'll be able to see him in person.” Imagine his surprise when the Pope sits down in the seat next to him. Shortly after take-off, the Pope begins a crossword puzzle. Almost immediately, the Pope turns to the gentleman and says, “Excuse me, but do you know a four letter word referring to a woman that ends in ‘unt?’” Only one word leaps to mind. “My goodness,” thinks the gentleman, “I can't tell the Pope that. There must be another word.” The gentleman thinks for quite a while, and then it hits him. Turning to the Pope, the gentleman says, “I think the word you're looking for is ‘aunt.’” “Of course,” says the Pope. “Do you have an eraser?”
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Shakuntala Devi

Died 21 Apr 2013 at age 83 (born 4 Nov 1929).Indian computer and astrologer who demonstrated her gift as an arithmetical prodigy in public performances (beginning at age 6 years old), rapidly computing answers to addition of several up to 13-digit numbers. Using her mental skills, she applied shortcuts using mathematical algorithms, though she could not explain that ability. Her calculations included using large numbers in multiplication and division of large numbers. She also quickly gave square and cube roots, and could name the day of the week for any date in the last century. Examples include taking the cube root of 188,132,517 or naming which days of the week the 14th of each month occurred in 1935. Her skill was one of computation, but she did not have a photographic memory for other facts, and could have memory lapses such as recognizing people met in years past.«
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