Can you replace the question mark with a number?
[6397] Can you replace the question mark with a number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 62 - The first user who solved this task is Nílton Corrêa de Sousa
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Can you replace the question mark with a number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 62
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #riddles
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Goodbye, mother

Walking through a supermarket, a young man noticed an old lady following him around. He ignored her for a while, but when he got to the checkout line, she got in front of him.
“Pardon me,” she said. “I'm sorry if I've been staring, but you look just like me son who died recently.
“I'm sorry for your loss,” the young man replied. “Is there anything I can do for you?”
“Well, as I'm leaving, could you just say ‘Goodbye, mother!?' It would make me feel so much better.” She gave him a sweet smile.
“Of course I can,” the young man promised.
As she gathered her bags and left, he called out “Goodbye, mother!” just as she had requested, feeling good about her smile.
Stepping up to the counter, he saw that his total was about $100 higher than it should be. “That amount is wrong,” he said. “I only have a few items!”
“Oh, your mother said that you would pay for her,” explained the clerk.

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Francesco Maria Grimaldi

Born 2 Apr 1618; died 28 Dec 1663 at age 45.Italian physicist and mathematician who studied the diffraction of light. He observed the image on a screen in a darkened room of a tiny beam of sunlight after it passed pass through a fine screen (or a slit, edge of a screen, wire, hair, fabric or bird feather). The image had iridescent fringes, and deviated from a normal geometrical shadow. He coined the name diffraction for this change of trajectory of the light passing near opaque objects (though, more specifically, it may have been interferences with two close sources that he observed). This provided evidence for later physicists to support the wave theory of light. With Riccioli, he investigated the object in free fall (1640-50), and found that distance of fall was proportional to the square of the time taken.«
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