What will be the approximate compound interest on Rs. 101005

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What will be the approximate compound interest on Rs. 101005 at 10% p.a. for 3 years ?

1. Rs. 4500
2. Rs. 3000
3. Rs. 3300
4. Rs. 3600

Correct Option: C

Compound interest = P {(1 + r/100)^t - 1}
= 10105 { (1 +10/100)³ - 1}
=10105 {(11/10)³ - 1}
=10105 {1331/1000 - 1}
=10105(331/1000)
= 3344.755
= Rs. 3300(app.)