NIMCET 2014 Question Paper with solutions

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Question : 70 of 120

Marks: +1, -0

The arithmetic mean of

2^{10}

and

2^{20}

is

$2^{15}$
$2^{5} + 2^{10}$
$2^{9} + 2^{20}$
$2^{9} + 2^{19}$

Solution:

Arithmetic mean of

2^{10}

and

2^{20} = {2^{10}+2^{20}}/{2}

= {2(2^9+2^{19})}/2 = 2^9+2^{19}

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