Q: A owner of a mart 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. On the 10th day of business, he earns an income of:
Options:
(A) 18
(B) 21
(C) 22
(D) 20
(E) 30 Let's give some random thoughts before answering.
user
2nd day he earns = 2(2 – 1)
3rd day he earns = 2(3 – 1)
On 10th day he earns 2(10 -1) = 18 rupees
Therefore, the answer is (A).
assistant