There are approximately 2.6 million deaths per year in country a. express this quantity as deaths per minute.

Take 2.7 million divided by the number of minutes in a year. 1 hour= 60 minutes 1 day= 24 hours So you take 24 hours × 60 minutes =1440 minutes 1 year= 365 per minute.

In one year, there are 365  days 
                   365x24=8760  hours
        8760x60=525 600 minutes

Dividing 2.6 million to the last number (525 600), we find death per minute in this country, which gives us more than 4 deaths in a minute. 

3cm and 6 and 9 cm that a possibility of that question

20000 as first it increases by 2500 then by 5000 so next it will increase by 10000