Answer
$$ 2696 \ mosquitoes$$
Work Step by Step
Each time, the number of mosquitoes which died the previous day is divided by 3. Thus, we find:
$$ = 1800+600+200+\frac{200}{3} + \frac{66.67}{3} + \frac{22}{3} \\ = 2696 \ mosquitoes$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.