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Home  >>  JEEMAIN and AIPMT  >>  Mathematics  >>  Class11  >>  Sequence and Series
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If a,b,c,d are positive real number , then least value of $\;(a+b+c+d)\;(\frac{1}{a}+\frac{1}{b}+\frac{1}{c}+\frac{1}{d})\;$ is :


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Answer : (c) 16
Explanation : $\;AM\;\geq\;GM$
Multiplying both
Least value of
answered Jan 22, 2014 by yamini.v

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