Replace the question mark with a number
[4069] Replace the question mark with a number - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 129 - The first user who solved this task is Thinh Ddh
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Replace the question mark with a number

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 129
The first user who solved this task is Thinh Ddh.
#brainteasers #math #riddles
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Fetch A Nice Price

I took a stuffed dog to the Antiques Roadshow and was told, "This is extremely rare. Do you know what it would fetch in good condition?"
"Dunno," I said. "A stick?"

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World aircraft speed record

In 1956, Bell X-2 rocket plane sets world aircraft speed record of 3,050 kph. The X-2 was a swept-wing, rocket-powered research aircraft used to investigate the problems of aerodynamic heating, stability, and control effectiveness at high speeds and altitudes. The X-2 was carried to launch altitude by a Boeing B-50, and then released. Lt. Col. Frank "Pete" Everest piloted this ninth powered flight and reached Mach 2.87. (Later that year, on 27 Sep 1956, its 13th powered flight by Capt M. Apt reached Mach 3.2. The flight ended with loss of control, a crash, and the death of the pilot.)Image: X-2 on ramp with B-50 mothership and support crew.
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