Which number replaces the question mark?
[2348] Which number replaces the question mark? - Solve Mathematical Puzzle: 4, 5, 6, 8, 11, 16, ?, 37, 58, 92 - #brainteasers #math #riddles - Correct Answers: 166 - The first user who solved this task is Djordje Timotijevic
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Which number replaces the question mark?

Solve Mathematical Puzzle: 4, 5, 6, 8, 11, 16, ?, 37, 58, 92
Correct answers: 166
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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Grandpa, can you...?

A little girl said, "Grandpa, can I sit on your lap?

"Why sure you can," her grandfather replied.

As she sat on her grandfather's lap she said, "Grandpa, can you make a sound like a frog?"

"A sound like a frog? Well, sure Grandpa can make a sound like a frog."

The girl said, "Grandpa, will you please, please make a sound like a frog?"

Perplexed, her grandfather said, "Sweetheart, why do you want me to make a sound like a frog?"

And the little girl said, "Because Grandma said that when you croak, we're going to Florida!"

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Record speed

In 1967, the X-15 rocket plane achieved a world record speed of Mach 6.7, which is 4,520 mph or over a mile per second, with U.S. Air Force pilot Pete Knight. It reached an altitude of 192,100 feet (58,552 m). Its internal structure of titanium was covered with a skin of Inconel X, a chrome-nickel alloy. To save fuel, the X-15 was air launched from a B-52 aircraft at about 45,000 ft. Test flights between 8 Jun 1959 and 24 Oct 1968 provided data on hypersonic air flow, aerodynamic heating, control and stability at hypersonic speeds and piloting techniques for reentry used in the development of the Mercury, Gemini, and Apollo spaceflight programs. The X-15 reached 354,200 feet (67 miles) on 22 Aug 1963.«[Image: NASA artist's conception of the flight.]
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