Explanation:

- Let's calculate the compound interest (x) first:

- Principal = Rs. 1000

- Rate = 10%

- Time = 3 years

- Compound Interest formula: \( A = P (1 + \frac{R}{100})^n \)

- \( A = 1000 (1 + \frac{10}{100})^3 = 1000 \times 1.1^3 \approx 1331 \)

- Compound Interest (x) = Rs. 1331 - Rs. 1000 = Rs. 331

- Now, calculate the simple interest (y):

- Principal = Rs. 1000

- Rate = 11%

- Time = 3 years

- Simple Interest formula: \( SI = \frac{P \times R \times T}{100} \)

- Simple Interest (y) = \( \frac{1000 \times 11 \times 3}{100} = Rs. 330 \)

- Difference between x and y:

- Difference = Rs. 331 - Rs. 330 = Rs. 1

- Conclusion:

- The correct option is Option:4, Rs.1.

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