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AIEEE 2010 Solved Paper

Section: Mathematics
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Question : 66 of 89
 
Marks: +1, -0
A person is to count 4500 currency notes. Let an denote the number of notes he counts in the nth minute. If a1=a2=...=a10=150 and a10,a11,.... are in an AP with common difference −2, then the time taken by him to count all notes is
[AIEEE 2010]
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