Ekanyunen Poorvena Sutra  can be applicable when ….a.      Multiplicand is 9b.      Multiplier is 9,99,999c.      Not applicable for 9d.      None of these

To answer this question, we need to understand the concept of Ekanyunen Poorvena Sutra. Ekanyunen Poorvena Sutra is a Vedic mathematics technique used for multiplication. It is based on the concept of "one less than the one before."

In this case, we have four options: a) Multiplicand is 9, b) Multiplier is 9,99,999, c) Not applicable for 9, and d) None of these.

Let's analyze each option:

a) Multiplicand is 9: According to Ekanyunen Poorvena Sutra, if the multiplicand is 9, we can apply the technique. This means that Ekanyunen Poorvena Sutra is applicable when the multiplicand is 9.

b) Multiplier is 9,99,999: The question does not specify whether Ekanyunen Poorvena Sutra can be applied when the multiplier is 9,99,999. Therefore, we cannot determine if it is applicable or not based on the given information.

c) Not applicable for 9: The question states that Ekanyunen Poorvena Sutra is not applicable for 9. Therefore, if the multiplicand is 9, we cannot use this technique.

d) None of these: This option implies that none of the given options are correct. However, since option a) states that Ekanyunen Poorvena Sutra is applicable when the multiplicand is 9, this option is not correct.

Based on the analysis, the correct answer is a) Multiplicand is 9. Ekanyunen Poorvena Sutra can be applied when the multiplicand is 9.