An enterprising businessman earns an income of Re 1 on the first day of his business On every subseq...........

Logical Reasoning(Master ) Arithmetical Reasoning

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

Rs.10

Rs.102

Rs.210

Rs.29

Rs.290

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Explanation:

Income of the first day = Re = 1.
Income of the 2nd day = Rs. ( 1 × 2) = Rs. 2¹.
Income of the 3rd day = Rs. ( 2¹ × 2) = Rs. 2² and so on.
Thus, Income of the nth day = Rs.2^{n – 1}.
Therefore Income of the 10th day = Rs. 2⁹.