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  1. The present population of a city is 180000. If it increases at the rate of 10% per annum, its population after 2 years will be :
    1. 207800
    2. 227800
    3. 217800
    4. 237800
Correct Option: C

Using Rule 17,
Required population after two years

= 1800001 +
10
2
100

= 180000 ×
11
×
11
= 217800
1010


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