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If there is a policy that 1/3rd of a population of a community has migrated every year from one place to some other place, what is the leftover population of that community after the sixth year, if there is no further growth in the population during this period?

20173Mprelimsupscyear-2017p2quantitative-aptitudequantitative-abilitypercentage-and-ratio
A.16/243rd part of the populationCorrect
B.32/243rd part of the population
C.32/729th part of the population
D.64/729th part of the population
Explanation & Solution

The correct answer is (A) 16/243rd part of the population.

Explanation:

Apply geometric sequences for migratory impacts on fixed population sums.

हिंदी में प्रश्न एवं आदर्श उत्तर

यदि ऐसी कोई नीति है कि किसी समुदाय की एक-तिहाई (1/3) आबादी प्रति वर्ष एक स्थान को छोड़कर किसी दूसरे स्थान पर चली जाए, तो छठवें वर्ष के बाद उस समुदाय की शेष बची आबादी क्या होगी, यदि इस अवधि के दौरान जनसंख्या में आगे और कोई वृद्धि न हुई हो?

A.जनसंख्या का 16/243वां भागसही
B.जनसंख्या का 32/243वां भाग
C.जनसंख्या का 32/729वां भाग
D.जनसंख्या का 64/729वां भाग

सही उत्तर (A) 16/243rd part of the population है।

व्याख्या:

Apply geometric sequences for migratory impacts on fixed population sums.

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