To calculate the number of debentures issued, use the formula:
\[
\text{Number of Debentures} = \frac{\text{Purchase Consideration}}{\text{Issue Price per Debenture}}.
\]
Step 1:} Calculate the Issue Price per Debenture.
The face value of each debenture is ₹100, but it is issued at a 10% discount. Therefore:
\[
\text{Issue Price per Debenture} = ₹100 - (₹100 \times 10%) = ₹100 - ₹10 = ₹90.
\]
Step 2:} Calculate the Number of Debentures.
\[
\text{Number of Debentures} = \frac{\text{Purchase Consideration}}{\text{Issue Price per Debenture}} = \frac{₹12,60,000}{₹90}.
\]
\[
\text{Number of Debentures} = 14,000.
\]
Final Answer: The number of debentures issued is \( \boxed{14,000} \).