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e) During the rapid diagnostic test for coronavirus among some people in an
urban area, 900 of them were found negative result and it was of the
number of tested people. Rest of the people were found to be suspected of
COVID-19 and their throat swab was tested. From the tested swab, 20 of
4
3
them were found infected.
(i) Find the tested number of people
(ii) Find the number of suspected people
iii) Find the number of infected people of COVID-19.
Sagot :
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