Find number abc
[7724] Find number abc - If c9cba - c9ca4 = 19 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 12
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Find number abc

If c9cba - c9ca4 = 19 find number abc. Multiple solutions may exist.
Correct answers: 12
#brainteasers #math
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The race

Two natural gas company service personnel, a senior training supervisor and a young trainee, were out checking meters in a suburban neighborhood. They parked their truck at the end of an alley and worked their way to the other end.

At the last house, a woman looking out her kitchen window watched the two men as they checked her gas meter. When they finished, the senior supervisor, proud of his physical condition, challenged his younger co-worker to a foot race back to their truck.

As they approached the truck, they realized that the woman from the last house they checked was huffing and puffing right behind them. They stopped and asked her what was wrong.

Gasping for breath, she replied, "When I saw two gas men running as hard as you two were, I figured I'd better run, too!"

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Optical pulsar announced

In 1969, the New York Times made public the news of the discovery a few days earlier of the first optical pulsar by astronomers at the University of Arizona on 16 Jan 1969. It was the result of a year's search using a stroboscopic technique. Flashes of light in the optical range were found coming from the same location in the Crab Nebula as a previously known pulsar emitting radio bursts. The rate of pulsation of the two signals was found to be the same, and thus presumed to be from a single star. Other observatories were immediately notified and the flashing was confirmed by the McDonald Observatory and by the powerful 84-inch reflector telescope at the Kitt Peak National Observatory in Arizona. The star was flashing at a rate of about 30 times per second, with intermediate flashes of lesser intensity.
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