MATH PUZZLE: Can you replace...
[2989] MATH PUZZLE: Can you replace... - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 2987 - The first user who solved this task is Дејан Шкребић
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 2987
The first user who solved this task is Дејан Шкребић.
#brainteasers #math #riddles
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Blonde and Psychiatrist

A blonde is speaking to a psychiatrist.

Blonde, "I'm on the road a lot, and my clients are

complaining that they can never reach me."

Psychiatrist, "Don't you have a phone in your car?"

Blonde, "That was a little too expensive, so I did the next

best thing. I put a mailbox in my car."

Psychiatrist, "Uh ... How's that working?"

Blonde, "Actually, I haven't gotten any letters yet."

Psychiatrist, "And why do you think that is?"

Blonde, "I figured it's because when I'm driving around, my

zip code keeps

changing."

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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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