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A person is to cout 4500 currency notes....

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

A

24 minutes

B

34 minutes

C

125 minutes

D

125 minutes

Text Solution

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The correct Answer is:
B
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