Find number abc
[7759] Find number abc - If 84bc5 + c26aa = 1aa0a2 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 1
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Find number abc

If 84bc5 + c26aa = 1aa0a2 find number abc. Multiple solutions may exist.
Correct answers: 1
#brainteasers #math
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Wandering Dog

An old, tired-looking dog wandered into the yard. I could tell from his collar and well-fed belly that he had a home.
He followed me into the house, down the hall, and fell asleep on the couch. An hour later, he went to the door, and I let him out. The next day he was back, resumed his position on the couch and slept for an hour. This continued for several weeks. Curious, I pinned a note to his collar: 'Every afternoon your dog comes to my house for a nap.'

The next day he arrived with a different note pinned to his collar: 'He lives in a home with four children -- he's trying to catch up on his sleep. Can I come with him tomorrow?'

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First telegraph used in railroading

In 1851, the first time train dispatching by telegraph in the U.S. took place when superintendent Charles Minot, of the Erie Railroad telegraphed 14 miles to Goshen, N.Y., to delay a train so that his train would not have to wait. Within weeks, all Erie trains were controlled by the telegraphed orders of a train dispatcher. Until that time the timetable was the sole authority for moving trains on the line. The “time interval rule” was cumbersome: a train had to wait one hour for an opposing train. If the train still didn't arrive, the brakeman on the waiting train must walk for 20 minutes ahead of his train with a red flag to stop the late train. The engineer of the waiting train would then operate to catch up to the brakeman. The routine was repeated as necessary.
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