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Find number abc

If 8bcac + 260bb = b0ac84 find number abc. Multiple solutions may exist.

Correct answers: 0

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DUDE, IT'S FRI...

DUDE, IT'S FRIDAY.. CHEER UP!

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African-American invention

In 1899, "Life Saving Guards for Street Cars" were patented by the black American inventor, J.H. Robinson (No, 623,929), who the previous month was issued a patent for life saving guards for locomotives (14 Mar 1899, No. 621,143).

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