What number comes next?
[5184] What number comes next? - Look at the series (9, 73, 241, 561, 1081, 1849, ?), determine the pattern, and find the value of the next number! - #brainteasers #math #riddles - Correct Answers: 40 - The first user who solved this task is Fazil Hashim
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What number comes next?

Look at the series (9, 73, 241, 561, 1081, 1849, ?), determine the pattern, and find the value of the next number!
Correct answers: 40
The first user who solved this task is Fazil Hashim.
#brainteasers #math #riddles
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Three older ladies...

Three older ladies were discussing the travails of getting older.

One said, "Sometimes I catch myself with a jar of mayonnaise in my hand, in front of the refrigerator, and I can't remember whether I was taking it out or putting it away."

The second lady said, "Yes, sometimes I find myself on the landing of the stairs, and I can't remember whether I was on my up, or on my way down."

The third lady chimed in, "Well, I'm glad I don't have those problems. Knock on wood." With that, she rapped her knuckles on the table, then said, "That must be the door. I'll get it."

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Donald R. Griffin

Born 3 Aug 1915; died 7 Nov 2003 at age 88. Donald Redfield Griffin was an American biophysicist, known for his research in animal navigation, animal behaviour, and sensory biophysics. With Robert Galambos, he studied bat echolocation (1938), a term he coined (1944) for how the bat's ears replace eyes in flight guidance. Using specialized high-frequency sound equipment by G.W. Pierce, they found that bats in flight produced ultrasonic sounds used to avoid obstacles. In WW II, he used physiological principles to design such military equipment as cold-weather clothing and headphones. Griffin also worked extensively on bird navigation. In the late 1940s, he flew in a Piper Cub to observe the flight paths of gannets and gulls. In his career, he pioneered rigorous techniques to study animals in their natural environment.«
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