Rohan's income doubles after every one year. If the initial income was Rs. 4 lakhs, What would be the income after 6 years? Pick
A) Rs. 2.24 crores  B) Rs. 2.28 crores  C) Rs. 2.52 crores  D) Rs. 2.56 crores  E) None of these
Explanation:   Income after 1 year = Rs. (4 * 21) lakhs   Income after 2 years = Rs. (4 * 2 * 2) lakhs = Rs. (4 x 22) lakhs   Income after 6 years = Rs. (4 * 26) lakhs = Rs. 256 lakhs = 2.56 crores.   ANSWER: Rs. 2.56 crores
<result>D</result>
Rohan's income doubles after every one year. If the initial income was Rs. 4 lakhs, What would be the income after 6 years?