MATH PUZZLE: Can you replace...
[2784] MATH PUZZLE: Can you replace... - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 339 - The first user who solved this task is Donya Sayah30
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 339
The first user who solved this task is Donya Sayah30.
#brainteasers #math #riddles
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John went to visit his 90-year...

John went to visit his 90-year-old grandfather in a very secluded, rural area of West Virginia. After spending a great evening chatting the night away, John's grandfather prepared breakfast of bacon, eggs and toast.
However, John noticed a film like substance on his plate, and questioned his grandfather asking, "Are these plates clean?"
His grandfather replied, "They're as clean as cold water can get em. Just you go ahead and finish your meal, Sonny!"
For lunch the old man made hamburgers. Again, John was concerned about the plates as his appeared to have tiny specks around the edge that looked like dried egg and asked, "Are you sure these plates are clean?"
Without looking up the old man said, "I told you before, Sonny, those dishes are as clean as cold water can get them. Now don't you fret, I don't want to hear another word about it!"
Later that afternoon, John was on his way to a nearby town and as he was leaving, his grandfather's dog started to growl, and wouldn't let him pass.
John yelled and said, "Grandpa, your dog won't let me get to my car."
Without diverting his attention from the football game he was watching on TV, the old man shouted, "Coldwater, go lay down now, yah hear me!!!"
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Goddard's rocket aircraft

In 1931, Robert Goddard patented a rocket-fueled aircraft design (U.S. No. 1,809,271). However, it drew no military interest from either the Army or the Navy, despite its innovative design, since even the government following the great Depression had limited resources to fund proper research. The invention was designed to utilize the energy of the gas blast of a rocket without dissipation to obtain the maximum propulsive effect by driving one or more turbine elements, which in turn could turn propellers for driving the plane in the usual manner at low altitudes. The invention also proposes using the reaction of the gas blast itself at such higher altitudes where the air is so thin that propellers would be useless.[Image: patent diagram showing propellers at the rear.]
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