Question

A person decides to give Charity of Rs. 1 on the first day, Rs. 2 on the 2nd day, Rs. 4 on the 3rd day Rs 8 on the 4th day and so on . How much amount he paid if he made the charity in the month of February 2004?

Answer 1

Let n = 29 days d =common differencelet s = savings=n/2 (2a+(n-1)*2)s=29/ ... Nidhi saves Rs. 2 on first day of the month, Rs. 4 on second day, Rs. 6 on ... What will be her saving in the month ...