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:  Choose the correct option.
A) 21	B) 22	C) 36	D) 20	E) 30
2nd day he earns = 2(2 – 2)   3rd day he earns = 2(3 – 2)   On 20th day he earns 2(20 -2) = 36 rupees   ANSWER:36
<result>C</result>
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: