Sequences and Series Part 1

Section: Mathematics

Question : 82 of 100

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]

34 minutes
125 minutes
135 minutes
24 minutes

Validate

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