Question

a total of 7,803,100 tourists visited country A from the year 2018 to the year 2020. round to the nearest place value, then express this number in the form of a single digit time an integer power of 10.

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thats not right
Answer
Two weeks before an examination day, a librarian monitored the number of students who visited the library. Then they compared it with the number of visits made in an average week. Approximately 2×10^3
visits were reflected in their logbook during this two-week period, while only about 5×10^2
were reflected on an average week. How many times higher is the number of library visits before examination day compared to the library visits in an average week? Your answer should be a whole number.(1 point)
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