ABC26GN1090 · Simplification
Subject: General Aptitude · Chapter: Simplification · Exam: 2003 · Marks: · Difficulty:
Income of a company doubles after every one year. If the initial income was ₹ 4 lakhs, what would be the income after 5 years?
(a)₹ 1.24 crores
(b)₹ 1.28 crores
(c)₹ 2.52 crores
(d)₹ 2.56 crores
Answer
Explanation
Income after 1 year $=₹\left(4 \times 2^{1}\right)$ lakhs. Income after 2 years $=₹(4 \times 2 \times 2)$ lakhs $$=₹\left(4 \times 2^{2}\right) \text { lakhs } \begin{aligned} \therefore \quad \text { Income after 5 years } & =₹\left(4 \times 2^{5}\right) \text { lakhs }=₹ 128 \text { lakhs } \\ & =₹ 1.28 \text { crores } . \end{aligned}$$
Explanation as extracted from the printed page; notation may be imperfect.
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