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A person is to count 4500 currency notes...

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

A

24 mintures

B

34 minutes

C

125 minutes

D

135 minutes

Text Solution

Verified by Experts

The correct Answer is:
B
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