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Find number abc

If 743aa + 89cb1 = 1b3883 find number abc. Multiple solutions may exist.

Correct answers: 83

The first user who solved this task is Manguexa Wagle.

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What's the trick?

A man went to the police station wishing to speak with the burglar who had broken into his house the night before.

"You'll get your chance in court," said the desk sergeant.

"No, no, no!" insisted the man. "I want to know how he got into the house without waking my wife. I've been trying to do that for years!"

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Mailbox

In 1858, the first U.S. patent for a street mailbox was patented by Albert Potts of Philadelphia (No.19,578). It comprised a simple metal box designed to attach to a lamppost. By August, these boxes were found along the streets of Boston, Mass., and New York City, N.Y. His patent described the "object of this improvement is to afford greater facilities to the inhabitants of large cities for the depositing of letters, and to enable the carriers to collect, or the citizens to deposit therein, at any period of time." The boxes had a central hole for the shaft of a lamp post, lids covering the drop hole to exclude weather, a sight hole so a carrier could see if any letters had been deposited, and a small door secured with a lock for the carrier to empty the box.

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