A sum of ₹10,000 deposited at compound interest becomes double after 5 years. After 20 years the amount will be :

₹10,000 चक्रवृद्धि ब्याज के रूप में 5 वर्ष में दुगुने हो जाते हैं, तो 20 वर्ष पश्चात् उसी चक्रवृद्धि ब्याज की दर से यह धन कितना हो जाएगा ?

1. A₹40,000
2. B₹60,000
3. C₹80,000
4. D₹1,60,000

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Correct answer: D. ₹1,60,000

Explanation

Money doubles every 5 years; 20 years = 4 doublings → 10,000 × 2⁴ = ₹1,60,000.

हर 5 वर्ष में दुगना; 20 वर्ष = 4 बार → 10,000 × 16 = ₹1,60,000।