Solve Math Puzzle
IF 1234 + 4567 = 284, 3012 + 8888 = 640, 5111 + 9291 = 95 THEN 9378 + 9999 = ?Correct answers: 35
The first user who solved this task is Roxana zavari.
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Water bicycleIn 1869, the first U.S. patent for a "water velocipede" was granted to F.A. Spofford and Matthew G. Raffington of Columbus, Ohio (No. 95,531). A number of similar devices were patented by the end of the nineteenth century. |