Find number abc
If 4a72c + 1717a = c59b4 find number abc. Multiple solutions may exist.Correct answers: 7
#brainteasers #math
Celluloid photographic filmIn 1887, an application was dated for the first U.S. patent for celluloid photographic film, submitted by the Reverend Hannibal Williston Goodwin desribing his invention of "nitro cellulose transparent flexible photographic film pellicles." The patent was issued 13 Sep 1898 (No. 610,861). He made a sale of one roll at $2.50 to Thomas Alva Edison on 2 Sep 1889. |