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Calculate the number 600

NUMBERMANIA: Calculate the number 600 using numbers [9, 2, 5, 9, 61, 721] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 0

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Please stand up

One day a college professor of Psychology was greeting his new college class. He stood up in front of the class and said, "Would everyone who thinks he or she is stupid please stand up?"

After a minute or so of silence, a young man stood up.

"Well, good morning. So, you actually think you're a moron?" the professor asked.

The kid replied, "No sir, I just didn't want to see you standing there all by yourself."

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Boris Borisovich Golitsyn

Born 2 Mar 1862; died 17 May 1916 at age 54.Prince Boris Borisovich Golitsyn was a Russian physicist and seismologist who developed scientific methods and instruments for earthquake observations and mineral prospecting. His early studies were in molecular physics, mathematical physics and electromagnetism, From 1899 his interests turned to seismology. In 1906, he invented the first effective electromagnetic seismograph and continued to improve it. It had a pendulum carrying a coil of insulated wire around a magnetic core fixed to the ground. The small current generated in the coil by relative motion caused by earth tremors is amplified to operate a pen recorder. The part of the Earth's mantle at a depth of 400-800 km, in which seismic waves travel rapidly, is named the Golitsyn layer in recognition of his work.«[Name also spelled Galizin ot Golicyn. Death given as 17 May in EB, but 16 May in DSB. Old style dates on the Russian calendar of that time: b 18 Feb; d 4 May.]

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