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Quantitative Aptitude

Simple Interest & Compound Interest

The least num...

Question

The least number of complete years in which a sum of money put out at 20% compound interest will be more than doubled is

A

3

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B

4

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C

5

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D

6

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Solution

The correct option is B
4

$2 = (1 + \frac{20}{100})^{n}$

n = 4

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