Answer: The best estimation of number of fish living in this lake is 440.
Step-by-step explanation:
Since we have given that
Number of fish caught that are tagged = 195
Number of fish caught by them = 258
Among them, number of tagged = 17
Number of fish that are untagged is given by
total number of fish living in this lake is given by
Hence, the best estimation of number of fish living in this lake is 440.