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Find number abc

If 9a1c5 - a9b17 = a516c find number abc. Multiple solutions may exist.

Correct answers: 21

The first user who solved this task is Nasrin 24 T.

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Paper shredder...

The new employee stood before the paper shredder looking confused.

"Need some help?" a secretary asked.

"Yes," he replied. "How does this thing work?"

"Simple," she said, taking the fat report from his hand and feeding it into the shredder.

"Thanks, but where do the copies come out?"

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Grote Reber

Died 20 Dec 2002 at age 90 (born 22 Dec 1911). U.S. amateur astronomer and radio engineer who self-financed and built the first radio telescope. He pioneered the new field of radio astronomy, and was the first to systematically study the sky by observing non-visible radiation. After reading about Jansky's discovery (1932) of natural radio emissions from space, Reber constructed a 9-meter dish antenna in his back yard and built three different detectors before finding 160 MHz signals (1939). In 1940 and 1944 he published articles titled Cosmic Static in the Astrophysical Journal. He was the first to express received radio signals in terms of flux density and brightness, first to find evidence that galactic radiation is non-thermal, and first to produce radio maps of the sky (1941).«

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