Explanation:

Let's break down the problem:

- Total Cost of the Building: Rs 5,00,000

- Payment in Cash: 15% of Rs 5,00,000 = Rs 75,000

- Remaining Balance: Rs 5,00,000 - Rs 75,000 = Rs 4,25,000

- Debenture face value: Rs 100

- Premium on Debenture: 25%, so the issue price is Rs 125 per debenture

- Number of Debentures Needed:

$$

\frac{\text{Remaining Balance}}{\text{Issue Price of One Debenture}} = \frac{4,25,000}{125} = 3,400

$$

- Options Given:

1. 4,250

2. 4,000

3. 5,000

4. 3,400

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