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Sachin invested in a national saving cer...

Sachin invested in a national saving certificate scheme. In the 1st year, he invested `₹5000`, in 2nd year `₹7000`, in 3rd year `₹9000` and so on. Find the total amount he invested in 12 years.

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The correct Answer is:
The total amount invested by Sachin in 12 years is Rs 1,92,000.
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