What is the missing number?
What is the missing number?Correct answers: 160
The first user who solved this task is Fazil Hashim.
#brainteasers #math #riddles
Hannah Wilkinson SlaterDied 2 Oct 1812 at age 37 (born 15 Dec 1774).(née Wilkinson) American inventor who held the first patent issued in the United States to a woman. The patent was for a new way of spinning cotton thread. This invention resulted from her working partnership with her husband, Samuel Slater, who founded the American cotton textile industry. By using spinning wheels to twist fine Surinam cotton yarn, she created a No. 20 two-ply thread that was an improvement on the linen thread previously in use for sewing cloth. |