What is the value of $\left(1 + \frac{1}{2}\right)\left(1 + \frac{1}{3}\right)\left(1 + \frac{1}{4}\right)\dots\left(1 + \frac{1}{40}\right)$?
Options:
- A: 20.5
- B: 20
- C: 41
- D: 21
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- A sum of ₹4000 is invested at compound interest for 2 years at a rate of 10% per annum. What will be the total amount at the end of 2 years?
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- The study of living organism :
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