An enterprising businessman earns an income of Re.1 on the first day of his business. On every subsequent day, he earns on income which is just double of that made on the previous day. On the 10th

Question

An enterprising businessman earns an

income of Re.1 on the first day of his

business. On every subsequent day, he earns

on income which is just double of that made

on the previous day. One the 10th day of

business, his income is

a) Rs. 29 b) Rs. 210

c) Rs. 10 d) Rs. 102

Answer 1

Income on the first day = Re. 1.

Income on the 2nd day = Rs. (1 x 2) = Rs. 2¹.

Income on the 3rd day = Rs. (2¹ x 2) = Rs. 2² and so on. Thus, Income on the 10 th day = Rs. 2⁹.

Therefore Income on the 10th day = Rs. 2⁹.