AP ICET 2016 Paper

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Question : 146 of 200

Marks: +1, -0

The arithmetic mean of the observations

29,30,31......289

is

318
159
$317/2$
$635/2$

Solution:

Given : 29, 30, 31, ........., 289
It is an A.P

∴\A.\M={\text "First term"+\text "Last term"}/2={29+289}/2

=159

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