Give stream of consciousness and then the final answer. An businessman earns an income of Re 2 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. On the 20th day of business, he earns an income of:\nOptions:\n(A) 21\n(B) 22\n(C) 36\n(D) 20\n(E) 30
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2nd day he earns = 2(2 – 2)\n3rd day he earns = 2(3 – 2)\nOn 20th day he earns 2(20 -2) = 36 rupees
The final answer: (C).
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