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From 1980-1990, the population of a coun...

From `1980-1990`, the population of a country was increased by `20%`.
From `1990-2000`, the population of the country was increased by `20%`.
From `2000-2010`, the population of the country was increased by `20%`.
Then the overall increased population (in percentage) of the country from `1980-2010` was.

A

0.6

B

0.628

C

0.722

D

0.728

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CHAMPION PUBLICATION-2014 TIER-II PAPER(19)-EXERCISE
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  12. The sum of money, that will give Rs 1 as interest per day at the rate ...

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  13. When principal = Rs.S , rate of interest - 2r % p.a, then a person wi...

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  14. The sum of money which becomes Rs.2420 at 10% rate of compound interes...

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  15. From a solid right circular cylinder of length 4 cm and diameter 6 cm,...

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  16. A spherical ball of radius 1 cm is dropped into a conical vessel of ra...

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  17. The in-radius of a triangle is 6 cm, and the sum of the length of its ...

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  18. One of the angles of a right-angled triangle is 15^(@), and the hypote...

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  19. Assume that a drop of water is spherical and its diameter is one-tenth...

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