Find number abc
[5949] Find number abc - If 2c4a0 + 87bca = bb3cba find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 33 - The first user who solved this task is Nasrin 24 T
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Find number abc

If 2c4a0 + 87bca = bb3cba find number abc. Multiple solutions may exist.
Correct answers: 33
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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Buying Stamps for Hanukkah

A woman goes to the post office to buy stamps for her Hanukkah cards.
She says to the clerk, "May I have 50 Hanukkah stamps?"
The clerk says, "What denomination?"
The woman replies, "Oh my. Has it come to this? Give me 6 Orthodox, 12 Conservative, and 32 Reform."
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First Black-American patent

In 1821, the first U.S. patent issued to a Black-American was granted to Thomas Jennings for a “dry-scouring”cleaning process (3 Mar 1821 No. X3306). Jennings used his royalties to buy his family out of slavery and to support the abolition of slavery. In 1831, Thomas Jennings became assistant secretary for the First Annual Convention of the People of Color in Philadelphia, Pennsylvania. For some time Henry Blair had been regarded as the first Black-American receiving a patent, for a corn planter (14 Oct 1834, No. X8447), until it became better known that the Jennings held that distinction.
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