Best estimation of total number of visitors visits a zoo are 1900.
"Estimation is to find out the approximate value of some quantity or price which represents any numeric value to get the rough idea."
According to the question,
Number of visitors visit zoo on Sunday = 1,361
Number of visitors visit zoo on Saturday = 549
Total number of visitors visit zoo = 1,361 + 549
= 1910
Best estimated value of 1910 = 1900 ( nearest hundreds)
Hence, best estimation of total number of visitors visits a zoo are 1900.
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