MATH PUZZLE: Can you replace...MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 147
The first user who solved this task is Darrin Haywood.
#brainteasers #math #riddles
Sir William Edmond LoganDied 22 Jun 1875 at age 77 (born 20 Apr 1798).Canadian geologist, known as the “Father of Canadian Geology.” While working in Wales at his uncle's coal and copper-smelting business, he made geologic maps of coalfields in Wales, pursuing a desire to understand the sources of coal and ores. He noted the relationship between the underlying clay layers and fossil tree roots with local coal beds. This substantiated the theory that coal beds are formed in place. When he founded the Geological Survey of Canada, the country's geology was virtually unknown. He served as its director (1842-69) and produced the monumental Report on the Geology of Canada (1863), recording 20 years of his research, fieldwork, mapping, reports, and examation of fossil and mineral specimens. He was knighted by Queen Victoria. Canada's highest mountain is named for him.