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 sutra. This means that Ekanyunen Poorvena Sutra is applicable when the multiplicand is 9.

b) Multiplier is 9,99,999: The sutra does not specifically mention anything about the multiplier. Therefore, we cannot determine if Ekanyunen Poorvena Sutra is applicable when the multiplier is 9,99,999.

c) Not applicable for 9: The option states that Ekanyunen Poorvena Sutra is not applicable for 9. However, this contradicts option a, which states that it is applicable when the multiplicand is 9. Therefore, this option is incorrect.

d) None of these: This option suggests that none of the given options are correct. However, based on our analysis, option a is correct.

In conclusion, Ekanyunen Poorvena Sutra can be applicable when the multiplicand is 9.