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The income of HBI on the nth day is Rs. ...

The income of HBI on the nth day is Rs. `(n^2 +2)` and the expenditure of HBI on the nth day is Rs. (2n+1) .
Also income = expenditure + savings
In how many days his total saving will be Rs. 1240 :

A

10

B

12

C

15

D

16

Text Solution

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The correct Answer is:
D
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