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An ark is said to be 500 cubits long, 40 cub wide, & 30 cub high. (1 palm is 0.1 m) Estimate the volume of the ark in cubic meters.? The sum of seven, four, and eighteen? It's 21st century and why haven't we yet colonized the Moon and the Mars and terraformed some Moon-size satellites in outer space? How old you should be in order to be able to solve optimal stopping problems? What is the time required to reached the maximum height?