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A person is to count 4500 notes. Let a(n...

A person is to count 4500 notes. Let `a_(n)` denote the number of notes the counts in the nth minute. If `a_(1)=a_(2)=a_(3)="_"=a_(10)=150`, and `a_(10),a_(11),a_(12), . . .` are in AP with the common difference -2, then the time taken by him to count all the notes is:

A

34 minutes

B

125 minutes

C

135 minutes

D

24 minutes

Text Solution

Verified by Experts

The correct Answer is:
A
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